diff --git a/app/controllers/admin/reports_controller.rb b/app/controllers/admin/reports_controller.rb
index aa877f1448c..95a304768ce 100644
--- a/app/controllers/admin/reports_controller.rb
+++ b/app/controllers/admin/reports_controller.rb
@@ -6,7 +6,16 @@ module Admin
 
     def index
       authorize :report, :index?
+
+      # We previously only supported searching reports by target account domain,
+      # target account ID or account ID, we now have more search options, but
+      # it's important that we don't break any saved queries people may have:
+      return redirect_to_new_filter if reports_filter.outdated?
+
       @reports = filtered_reports.page(params[:page])
+    rescue Mastodon::InvalidParameterError => e
+      flash.now[:error] = e.message
+      @reports = []
     end
 
     def show
@@ -49,12 +58,20 @@ module Admin
 
     private
 
+    def reports_filter
+      @reports_filter ||= ReportFilter.new(filter_params)
+    end
+
     def filtered_reports
-      ReportFilter.new(filter_params).results.order(id: :desc).includes(:account, :target_account)
+      reports_filter.results.order(id: :desc).includes(:account, :target_account)
     end
 
     def filter_params
-      params.slice(*ReportFilter::KEYS).permit(*ReportFilter::KEYS)
+      params.slice(*ReportFilter::ALL_KEYS).permit(*ReportFilter::ALL_KEYS)
+    end
+
+    def redirect_to_new_filter
+      redirect_to admin_reports_path(reports_filter.updated_filter)
     end
 
     def set_report
diff --git a/app/controllers/api/v1/admin/reports_controller.rb b/app/controllers/api/v1/admin/reports_controller.rb
index 9b5beeab67e..d53c36a9003 100644
--- a/app/controllers/api/v1/admin/reports_controller.rb
+++ b/app/controllers/api/v1/admin/reports_controller.rb
@@ -14,13 +14,7 @@ class Api::V1::Admin::ReportsController < Api::BaseController
   after_action :verify_authorized
   after_action :insert_pagination_headers, only: :index
 
-  FILTER_PARAMS = %i(
-    resolved
-    account_id
-    target_account_id
-  ).freeze
-
-  PAGINATION_PARAMS = (%i(limit) + FILTER_PARAMS).freeze
+  PAGINATION_PARAMS = (%i(limit) + ReportFilter::ALL_KEYS).freeze
 
   def index
     authorize :report, :index?
@@ -86,7 +80,16 @@ class Api::V1::Admin::ReportsController < Api::BaseController
   end
 
   def filter_params
-    params.permit(*FILTER_PARAMS)
+    filter_params = params.slice(*ReportFilter::API_KEYS).permit(*ReportFilter::API_KEYS)
+
+    resolved = filter_params.delete(:resolved)
+    if resolved.present?
+      filter_params[:status] = ActiveModel::Type::Boolean.new.cast(resolved) ? 'resolved' : 'unresolved'
+    elsif filter_params[:status].nil?
+      filter_params[:status] = 'unresolved'
+    end
+
+    filter_params
   end
 
   def next_path
diff --git a/app/javascript/styles/mastodon/admin.scss b/app/javascript/styles/mastodon/admin.scss
index c3a14a4fbde..c9dcf2d3286 100644
--- a/app/javascript/styles/mastodon/admin.scss
+++ b/app/javascript/styles/mastodon/admin.scss
@@ -2177,3 +2177,12 @@ a.sparkline {
     }
   }
 }
+
+select#search_type {
+  width: 33ch;
+}
+
+.input--with-select {
+  display: flex;
+  gap: 15px;
+}
diff --git a/app/models/report_filter.rb b/app/models/report_filter.rb
index 9d2b0fb3742..77848a5ce63 100644
--- a/app/models/report_filter.rb
+++ b/app/models/report_filter.rb
@@ -2,10 +2,39 @@
 
 class ReportFilter
   KEYS = %i(
+    status
+    search_type
+    search_term
+    target_origin
+    account_id
+    target_account_id
+  ).freeze
+
+  OUTDATED_ADMIN_KEYS = %i(
+    resolved
+    by_target_domain
+    account_id
+    target_account_id
+  ).freeze
+
+  ALL_KEYS = KEYS + OUTDATED_ADMIN_KEYS
+  API_KEYS = KEYS + %i(
     resolved
     account_id
     target_account_id
-    by_target_domain
+  ).freeze
+
+  SEARCH_TYPES = %w(
+    source
+    target
+  ).freeze
+
+  TARGET_ORIGINS = %w(
+    local
+    remote
+  ).freeze
+
+  FILTER_PARAMS = %i(
     target_origin
   ).freeze
 
@@ -15,11 +44,71 @@ class ReportFilter
     @params = params
   end
 
-  def results
-    scope = Report.unresolved
+  def outdated?
+    # We always need a status parameter:
+    return true if @params.exclude? :status
 
+    OUTDATED_ADMIN_KEYS.any? { |key, _value| @params.include? key }
+  end
+
+  def updated_filter
+    updated_params = @params.to_hash
+
+    # Old parameters:
+    by_target_domain = updated_params.delete('by_target_domain')
+    account_id = updated_params.delete('account_id')
+    target_account_id = updated_params.delete('target_account_id')
+    resolved = updated_params.delete('resolved')
+    existing_status = updated_params.delete('status')
+
+    status_filter = if existing_status
+                      existing_status
+                    elsif resolved.present?
+                      resolved == '1' ? 'resolved' : 'unresolved'
+                    elsif by_target_domain || target_account_id || account_id
+                      'all'
+                    else
+                      'unresolved'
+                    end
+
+    updated_params['status'] = status_filter
+
+    if by_target_domain
+      return updated_params.merge({
+        search_type: 'target',
+        search_term: by_target_domain,
+      })
+    end
+
+    account = if account_id
+                Account.find(account_id)
+              elsif target_account_id
+                Account.find(target_account_id)
+              end
+
+    if account
+      return updated_params.merge({
+        search_type: target_account_id.present? ? 'target' : 'source',
+        search_term: "@#{account.acct}",
+      })
+    end
+
+    updated_params
+  end
+
+  def results
+    raise Mastodon::InvalidParameterError, "Unknown parameter(s): #{unknown_params.join(', ')}" if unknown_params.any?
+
+    scope = initial_scope
+
+    # If we're searching, then no other filters can be applied, as the other
+    # filters conflict with the search filter:
+    return scope.merge search_scope if searching?
+
+    # Otherwise, apply the other filters
     relevant_params.each do |key, value|
-      scope = scope.merge scope_for(key, value)
+      new_scope = scope_for(key, value)
+      scope = scope.merge new_scope if new_scope
     end
 
     scope
@@ -29,39 +118,99 @@ class ReportFilter
 
   def relevant_params
     params.tap do |args|
-      args.delete(:target_origin) if origin_is_remote_and_domain_present?
+      args.delete(:status)
+      args.delete(:search_type)
+      args.delete(:search_term)
     end
   end
 
-  def origin_is_remote_and_domain_present?
-    params[:target_origin] == 'remote' && params[:by_target_domain].present?
+  def initial_scope
+    case params[:status]
+    when 'resolved'
+      Report.resolved
+    when 'all'
+      Report.unscoped
+    else
+      # catches both no status and 'unresolved'
+      Report.unresolved
+    end
+  end
+
+  def account_filter
+    if params[:search_term].starts_with? '@'
+      username, domain = params[:search_term].delete_prefix('@').split('@', 2)
+
+      # If the domain part is the local domain, we remove the domain part:
+      domain = nil if TagManager.instance.local_domain?(domain)
+
+      # It doesn't make sense to search for `@username@domain` since we don't
+      # have the reporter's full handle for remote reports, we only know the
+      # origin domain.
+      raise Mastodon::InvalidParameterError, 'You cannot search for reports from a specific remote user' if search_type == :source && domain.present?
+
+      # Ensure we have a valid username:
+      raise Mastodon::InvalidParameterError, "Invalid username for search: #{username}" unless Account::USERNAME_ONLY_RE.match?(username)
+
+      Account.where(username: username, domain: domain)
+    else
+      domain = params[:search_term]
+
+      # If the domain part is the local domain, we need to use nil for the domain search:
+      domain = nil if TagManager.instance.local_domain?(domain)
+
+      # FIXME: We should probably find a way to reuse DomainValidator here:
+      raise Mastodon::InvalidParameterError, "Invalid domain for search: #{domain}" if domain.present? && !domain.include?('.')
+
+      Account.where(domain: domain)
+    end
+  end
+
+  def search_type
+    if SEARCH_TYPES.include? params[:search_type]
+      params[:search_type].to_sym
+    else
+      raise Mastodon::InvalidParameterError, "Invalid search type: #{params[:search_type]}"
+    end
+  end
+
+  def search_scope
+    case search_type
+    when :target
+      Report.where(target_account: account_filter)
+    when :source
+      Report.where(account: account_filter)
+    end
   end
 
   def scope_for(key, value)
     case key.to_sym
-    when :by_target_domain
-      Report.where(target_account: Account.where(domain: value))
-    when :resolved
-      Report.resolved
-    when :account_id
-      Report.where(account_id: value)
-    when :target_account_id
-      Report.where(target_account_id: value)
     when :target_origin
       target_origin_scope(value)
+    when :target_account_id
+      Report.where(target_account_id: value)
+    when :account_id
+      Report.where(account_id: value)
     else
       raise Mastodon::InvalidParameterError, "Unknown filter: #{key}"
     end
   end
 
   def target_origin_scope(value)
+    raise Mastodon::InvalidParameterError, "Unknown origin value: #{value}" unless TARGET_ORIGINS.include? value
+
     case value.to_sym
     when :local
       Report.where(target_account: Account.local)
     when :remote
       Report.where(target_account: Account.remote)
-    else
-      raise Mastodon::InvalidParameterError, "Unknown value: #{value}"
     end
   end
+
+  def searching?
+    params[:search_term].present? && params[:search_type].present?
+  end
+
+  def unknown_params
+    params.keys.reject { |param| ReportFilter::KEYS.include? param.to_sym }
+  end
 end
diff --git a/app/views/admin/reports/index.html.haml b/app/views/admin/reports/index.html.haml
index e08218a05d9..716dd27c8bb 100644
--- a/app/views/admin/reports/index.html.haml
+++ b/app/views/admin/reports/index.html.haml
@@ -5,31 +5,36 @@
   .filter-subset
     %strong= t('admin.reports.status')
     %ul
-      %li= filter_link_to t('admin.reports.unresolved'), resolved: nil
-      %li= filter_link_to t('admin.reports.resolved'), resolved: '1'
+      %li= filter_link_to t('admin.reports.all'), status: 'all'
+      %li= filter_link_to t('admin.reports.unresolved'), status: 'unresolved'
+      %li= filter_link_to t('admin.reports.resolved'), status: 'resolved'
   .filter-subset
     %strong= t('admin.reports.target_origin')
     %ul
       %li= filter_link_to t('admin.accounts.location.all'), target_origin: nil
-      %li= filter_link_to t('admin.accounts.location.local'), target_origin: 'local'
-      %li= filter_link_to t('admin.accounts.location.remote'), target_origin: 'remote'
+      %li= filter_link_to t('admin.accounts.location.local'), target_origin: 'local', search_term: nil, search_type: nil
+      %li= filter_link_to t('admin.accounts.location.remote'), target_origin: 'remote', search_term: nil, search_type: nil
 
 = form_with url: admin_reports_url, method: :get, class: :simple_form do |form|
   .fields-group
-    - ReportFilter::KEYS.each do |key|
-      = form.hidden_field key, value: params[key] if params[key].present?
+    = form.hidden_field :status, value: 'all'
 
-    - %i(by_target_domain).each do |key|
-      .input.string.optional
-        = form.text_field key,
-                          value: params[key],
-                          class: 'string optional',
-                          placeholder: I18n.t("admin.reports.#{key}")
+    .input.string.optional.input--with-select
+      = form.select :search_type, options_for_select([[I18n.t('admin.reports.search_type_target'), 'target'], [I18n.t('admin.reports.search_type_source'), 'source']], params[:search_type] || 'target')
+      = form.text_field :search_term,
+                        value: params[:search_term],
+                        class: 'string optional',
+                        placeholder: I18n.t('admin.reports.search_term')
+
+    %p.hint= t('admin.reports.search_help_html')
 
     .actions
       %button.button= t('admin.accounts.search')
       = link_to t('admin.accounts.reset'), admin_reports_path, class: 'button button--dangerous'
 
+- if @reports.empty?
+  = nothing_here 'nothing-here'
+
 - @reports.group_by(&:target_account).each do |target_account, reports|
   .report-card
     .report-card__profile
@@ -72,8 +77,14 @@
                 = t('admin.reports.forwarded_to', domain: target_account.domain)
 
           .report-card__summary__item__assigned
+            - if report.action_taken?
+              = t('admin.reports.resolved')
+            - else
+              = t('admin.reports.unresolved')
+            %br
             - if report.assigned_account.present?
               = admin_account_link_to report.assigned_account
             - else
-              \-
-= paginate @reports
+              = t('admin.reports.not_assigned')
+
+= paginate @reports unless @reports.empty?
diff --git a/app/views/admin/reports/show.html.haml b/app/views/admin/reports/show.html.haml
index 86f87f197eb..8f6fd1c3a2e 100644
--- a/app/views/admin/reports/show.html.haml
+++ b/app/views/admin/reports/show.html.haml
@@ -61,7 +61,11 @@
 - if @report.unresolved?
   %hr.spacer/
 
-  %p#actions= t(@report.target_account.local? ? 'admin.reports.actions_description_html' : 'admin.reports.actions_description_remote_html')
+  %p#actions
+    - if @report.target_account.local?
+      = t('admin.reports.actions_description_html')
+    - else
+      = t('admin.reports.actions_description_remote_html')
 
   = render partial: 'admin/reports/actions', locals: { report: @report, statuses: @statuses }
 
diff --git a/config/locales/en.yml b/config/locales/en.yml
index ffe6028e729..c822b8d5f90 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -665,13 +665,13 @@ en:
       actions_description_remote_html: Decide which action to take to resolve this report. This will only affect how <strong>your</strong> server communicates with this remote account and handle its content.
       actions_no_posts: This report doesn't have any associated posts to delete
       add_to_report: Add more to report
+      all: all
       already_suspended_badges:
         local: Already suspended on this server
         remote: Already suspended on their server
       are_you_sure: Are you sure?
       assign_to_self: Assign to me
       assigned: Assigned moderator
-      by_target_domain: Domain of reported account
       cancel: Cancel
       category: Category
       category_description_html: The reason this account and/or content was reported will be cited in communication with the reported account
@@ -689,6 +689,7 @@ en:
       mark_as_sensitive: Mark as sensitive
       mark_as_unresolved: Mark as unresolved
       no_one_assigned: No one
+      not_assigned: Not Assigned
       notes:
         create: Add note
         create_and_resolve: Resolve with note
@@ -698,15 +699,16 @@ en:
         title: Notes
       notes_description_html: View and leave notes to other moderators and your future self
       processed_msg: 'Report #%{id} successfully processed'
-      quick_actions_description_html: 'Take a quick action or scroll down to see reported content:'
       remote_user_placeholder: the remote user from %{instance}
-      reopen: Reopen report
       report: 'Report #%{id}'
-      reported_account: Reported account
       reported_by: Reported by
       reported_with_application: Reported with application
       resolved: Resolved
       resolved_msg: Report successfully resolved!
+      search_help_html: 'Note: You can only search for reports about <code>@username@domain</code>, as remote reports are only from a domain, not a specific account.'
+      search_term: domain, @username or @username@domain
+      search_type_source: Reports from
+      search_type_target: Reports about
       skip_to_actions: Skip to actions
       status: Status
       statuses: Reported content
@@ -734,7 +736,6 @@ en:
       unassign: Unassign
       unknown_action_msg: 'Unknown action: %{action}'
       unresolved: Unresolved
-      updated_at: Updated
       view_profile: View profile
     roles:
       add_new: Add role
diff --git a/config/navigation.rb b/config/navigation.rb
index 66fdfdfe585..04be5555a1f 100644
--- a/config/navigation.rb
+++ b/config/navigation.rb
@@ -52,7 +52,7 @@ SimpleNavigation::Configuration.run do |navigation|
     end
 
     n.item :moderation, safe_join([material_symbol('gavel'), t('moderation.title')]), nil, if: -> { current_user.can?(:manage_reports, :view_audit_log, :manage_users, :manage_invites, :manage_taxonomies, :manage_federation, :manage_blocks) && !self_destruct } do |s|
-      s.item :reports, safe_join([material_symbol('flag'), t('admin.reports.title')]), admin_reports_path, highlights_on: %r{/admin/reports|admin/report_notes}, if: -> { current_user.can?(:manage_reports) }
+      s.item :reports, safe_join([material_symbol('flag'), t('admin.reports.title')]), admin_reports_path({ status: 'unresolved' }), highlights_on: %r{/admin/reports|admin/report_notes}, if: -> { current_user.can?(:manage_reports) }
       s.item :appeals, safe_join([material_symbol('feedback'), t('admin.disputes.appeals.title')]), admin_disputes_appeals_path, highlights_on: %r{/admin/disputes/appeals}, if: -> { current_user.can?(:manage_appeals) }
       s.item :accounts, safe_join([material_symbol('groups'), t('admin.accounts.title')]), admin_accounts_path(origin: 'local'), highlights_on: %r{/admin/accounts|admin/account_moderation_notes|/admin/pending_accounts|/admin/users}, if: -> { current_user.can?(:manage_users) }
       s.item :tags, safe_join([material_symbol('tag'), t('admin.tags.title')]), admin_tags_path, highlights_on: %r{/admin/tags}, if: -> { current_user.can?(:manage_taxonomies) }
diff --git a/spec/controllers/admin/reports_controller_spec.rb b/spec/controllers/admin/reports_controller_spec.rb
new file mode 100644
index 00000000000..eb32c21f599
--- /dev/null
+++ b/spec/controllers/admin/reports_controller_spec.rb
@@ -0,0 +1,228 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+require 'debug'
+
+RSpec.describe Admin::ReportsController do
+  render_views
+
+  let(:user) { Fabricate(:user, role: UserRole.find_by(name: 'Admin')) }
+
+  before do
+    sign_in user, scope: :user
+  end
+
+  describe 'GET #index' do
+    # This isn't the primary entrypoint anymore, as navigation links with the
+    # status=unresolved filter applied.
+    it 'redirects if no filters are supplied' do
+      get :index
+
+      expect(response)
+        .to redirect_to admin_reports_path({ status: 'unresolved' })
+    end
+
+    it 'returns http success with status filter of unresolved' do
+      specified = Fabricate(:report, action_taken_at: nil)
+      Fabricate(:report, action_taken_at: Time.now.utc)
+
+      get :index, params: { status: 'unresolved' }
+
+      expect(response).to have_http_status(200)
+
+      expect(report_groups.size).to eq 1
+      expect(report_groups[0][:reports].size).to eq 1
+      expect(report_groups[0][:reports][0][:link]).to include specified.id.to_s
+    end
+
+    it 'returns http success with status filter of resolved' do
+      specified = Fabricate(:report, action_taken_at: Time.now.utc)
+      Fabricate(:report, action_taken_at: nil)
+
+      get :index, params: { status: 'resolved' }
+
+      expect(response).to have_http_status(200)
+
+      expect(report_groups.size).to eq 1
+      expect(report_groups[0][:reports].size).to eq 1
+      expect(report_groups[0][:reports][0][:link]).to include specified.id.to_s
+    end
+
+    it 'returns http success with status filter of all' do
+      targeted_account = Fabricate(:account)
+      resolved = Fabricate(:report, target_account: targeted_account, action_taken_at: Time.now.utc)
+      unresolved = Fabricate(:report, target_account: targeted_account, action_taken_at: nil)
+
+      get :index, params: { status: 'all' }
+
+      expect(response).to have_http_status(200)
+
+      expect(report_groups.size).to eq 1
+      expect(report_groups[0][:target_account_link]).to include targeted_account.id.to_s
+      expect(report_groups[0][:reports].size).to eq 2
+      expect(report_groups[0][:reports][0][:link]).to include unresolved.id.to_s
+      expect(report_groups[0][:reports][1][:link]).to include resolved.id.to_s
+    end
+
+    it 'returns the correct results with a search filter about an account' do
+      targeted_account = Fabricate(:account)
+      not_targeted_account = Fabricate(:account)
+
+      targeted = Fabricate(:report, action_taken_at: nil, target_account: targeted_account)
+      Fabricate(:report, action_taken_at: nil, target_account: not_targeted_account)
+
+      get :index, params: { search_type: 'target', search_term: "@#{targeted_account.acct}", status: 'all' }
+
+      expect(response).to have_http_status(200)
+
+      expect(report_groups.size).to eq 1
+      expect(report_groups[0][:target_account_link]).to include targeted_account.id.to_s
+      expect(report_groups[0][:reports].size).to eq 1
+      expect(report_groups[0][:reports][0][:link]).to include targeted.id.to_s
+    end
+
+    def report_groups
+      response.parsed_body.css('.report-card').map do |card|
+        target_account_link = card.css('.report-card__profile a.account__display-name').attr('href').value
+        reports = card.css('.report-card__summary__item').map do |report|
+          {
+            reported_by: report.css('.report-card__summary__item__reported-by').first.text.strip,
+            link: report.css('.report-card__summary__item__content > a').attr('href').value,
+          }
+        end
+
+        {
+          target_account_link: target_account_link,
+          reports: reports,
+        }
+      end
+    end
+
+    describe 'outdated filters' do
+      # As we're changing how the report search field works, we need to ensure we
+      # don't break anyone's existing searches:
+      it 'redirects if by_target_domain is used' do
+        get :index, params: { by_target_domain: 'social.example' }
+
+        expect(response)
+          .to redirect_to admin_reports_path({ search_type: 'target', search_term: 'social.example', status: 'all' })
+      end
+
+      it 'redirects if resolved is used' do
+        get :index, params: { resolved: '1' }
+
+        expect(response)
+          .to redirect_to admin_reports_path({ status: 'resolved' })
+      end
+
+      it 'redirects if resolved and by_target_domain are used' do
+        get :index, params: { resolved: '1', by_target_domain: 'social.example' }
+
+        expect(response).to redirect_to admin_reports_path({
+          search_type: 'target',
+          search_term: 'social.example',
+          status: 'resolved',
+        })
+      end
+
+      it 'redirects if resolved is false and by_target_domain is used' do
+        get :index, params: { resolved: '0', by_target_domain: 'social.example' }
+
+        expect(response).to redirect_to admin_reports_path({
+          search_type: 'target',
+          search_term: 'social.example',
+          status: 'unresolved',
+        })
+      end
+
+      it 'redirects if target_account_id filter is used' do
+        account = Fabricate(:account)
+        get :index, params: { target_account_id: account.id }
+
+        expect(response).to redirect_to admin_reports_path({
+          search_type: 'target',
+          search_term: "@#{account.acct}",
+          status: 'all',
+        })
+      end
+
+      it 'redirects if account_id filter is used' do
+        account = Fabricate(:account)
+        get :index, params: { account_id: account.id }
+
+        expect(response).to redirect_to admin_reports_path({
+          search_type: 'source',
+          search_term: "@#{account.acct}",
+          status: 'all',
+        })
+      end
+    end
+  end
+
+  describe 'GET #show' do
+    it 'renders report' do
+      report = Fabricate(:report)
+
+      get :show, params: { id: report }
+
+      expect(response).to have_http_status(200)
+      expect(response.body).to include(report.target_account.acct)
+    end
+  end
+
+  describe 'POST #resolve' do
+    it 'resolves the report' do
+      report = Fabricate(:report)
+
+      put :resolve, params: { id: report }
+      expect(response).to redirect_to(admin_reports_path)
+      report.reload
+      expect(report.action_taken_by_account).to eq user.account
+      expect(report.action_taken?).to be true
+      expect(last_action_log.target).to eq(report)
+    end
+  end
+
+  describe 'POST #reopen' do
+    it 'reopens the report' do
+      report = Fabricate(:report, action_taken_at: 3.days.ago)
+
+      put :reopen, params: { id: report }
+      expect(response).to redirect_to(admin_report_path(report))
+      report.reload
+      expect(report.action_taken_by_account).to be_nil
+      expect(report.action_taken?).to be false
+      expect(last_action_log.target).to eq(report)
+    end
+  end
+
+  describe 'POST #assign_to_self' do
+    it 'reopens the report' do
+      report = Fabricate(:report)
+
+      put :assign_to_self, params: { id: report }
+      expect(response).to redirect_to(admin_report_path(report))
+      report.reload
+      expect(report.assigned_account).to eq user.account
+      expect(last_action_log.target).to eq(report)
+    end
+  end
+
+  describe 'POST #unassign' do
+    it 'reopens the report' do
+      report = Fabricate(:report, assigned_account_id: Account.last.id)
+
+      put :unassign, params: { id: report }
+      expect(response).to redirect_to(admin_report_path(report))
+      report.reload
+      expect(report.assigned_account).to be_nil
+      expect(last_action_log.target).to eq(report)
+    end
+  end
+
+  private
+
+  def last_action_log
+    Admin::ActionLog.last
+  end
+end
diff --git a/spec/models/report_filter_spec.rb b/spec/models/report_filter_spec.rb
index 51933e475ad..86894fe7192 100644
--- a/spec/models/report_filter_spec.rb
+++ b/spec/models/report_filter_spec.rb
@@ -21,7 +21,7 @@ RSpec.describe ReportFilter do
 
   describe 'with valid params' do
     it 'combines filters on Report' do
-      filter = described_class.new(account_id: '123', resolved: true, target_account_id: '456')
+      filter = described_class.new(account_id: '123', status: 'resolved', target_account_id: '456')
 
       allow(Report).to receive_messages(where: Report.none, resolved: Report.none)
       filter.results
@@ -31,12 +31,12 @@ RSpec.describe ReportFilter do
     end
   end
 
-  context 'when given remote target_origin and also by_target_domain' do
+  context 'when given remote search_type and search_term of a domain' do
     let!(:matching_report) { Fabricate :report, target_account: Fabricate(:account, domain: 'match.example') }
     let!(:non_matching_report) { Fabricate :report, target_account: Fabricate(:account, domain: 'other.example') }
 
     it 'preserves the domain value' do
-      filter = described_class.new(by_target_domain: 'match.example', target_origin: 'remote')
+      filter = described_class.new(search_term: 'match.example', search_type: 'target')
 
       expect(filter.results)
         .to include(matching_report)
diff --git a/spec/requests/api/v1/admin/reports_spec.rb b/spec/requests/api/v1/admin/reports_spec.rb
index 54dd4c9c8c4..24572e8ad1d 100644
--- a/spec/requests/api/v1/admin/reports_spec.rb
+++ b/spec/requests/api/v1/admin/reports_spec.rb
@@ -67,8 +67,19 @@ RSpec.describe 'Reports' do
           .to match_array(expected_response)
       end
 
-      context 'with resolved param' do
+      context 'with outdated resolved param' do
         let(:params) { { resolved: true } }
+        let(:scope) { Report.resolved }
+
+        it 'returns the resolved reports' do
+          subject
+
+          expect(response.parsed_body).to match_array(expected_response)
+        end
+      end
+
+      context 'with status param of resolved' do
+        let(:params) { { status: 'resolved' } }
         let(:scope)  { Report.resolved }
 
         it 'returns only the resolved reports' do
@@ -78,6 +89,17 @@ RSpec.describe 'Reports' do
         end
       end
 
+      context 'with status param of all' do
+        let(:params) { { status: 'all' } }
+        let(:scope)  { Report.all }
+
+        it 'returns only the resolved reports' do
+          subject
+
+          expect(response.parsed_body).to match_array(expected_response)
+        end
+      end
+
       context 'with account_id param' do
         let(:params) { { account_id: reporter.id } }
         let(:scope)  { Report.unresolved.where(account: reporter) }