diff --git a/app/assets/javascripts/admin/components/penalty-post-action.js.es6 b/app/assets/javascripts/admin/components/penalty-post-action.js.es6
index c485364ad0f..543a8baf3c9 100644
--- a/app/assets/javascripts/admin/components/penalty-post-action.js.es6
+++ b/app/assets/javascripts/admin/components/penalty-post-action.js.es6
@@ -1,6 +1,7 @@
 import computed from "ember-addons/ember-computed-decorators";
 
-const ACTIONS = ["delete", "edit", "none"];
+const ACTIONS = ["delete", "delete_replies", "edit", "none"];
+
 export default Ember.Component.extend({
   postId: null,
   postAction: null,
diff --git a/app/controllers/admin/users_controller.rb b/app/controllers/admin/users_controller.rb
index f4235e86539..fc699c8c20f 100644
--- a/app/controllers/admin/users_controller.rb
+++ b/app/controllers/admin/users_controller.rb
@@ -551,6 +551,8 @@ class Admin::UsersController < Admin::AdminController
       case params[:post_action]
       when 'delete'
         PostDestroyer.new(current_user, post).destroy
+      when "delete_replies"
+        PostDestroyer.delete_with_replies(current_user, post)
       when 'edit'
         revisor = PostRevisor.new(post)
 
diff --git a/app/models/reviewable_flagged_post.rb b/app/models/reviewable_flagged_post.rb
index 5c00228f8e3..a8eea800d3e 100644
--- a/app/models/reviewable_flagged_post.rb
+++ b/app/models/reviewable_flagged_post.rb
@@ -229,12 +229,7 @@ class ReviewableFlaggedPost < Reviewable
 
   def perform_delete_and_agree_replies(performed_by, args)
     result = agree(performed_by, args)
-
-    reply_ids = post.reply_ids(Guardian.new(performed_by), only_replies_to_single_post: false)
-    replies = Post.where(id: reply_ids.map { |r| r[:id] })
-    PostDestroyer.new(performed_by, post).destroy
-    replies.each { |reply| PostDestroyer.new(performed_by, reply).destroy }
-
+    PostDestroyer.delete_with_replies(performed_by, post)
     result
   end
 
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index dbbf6dda3e7..f11cf849bde 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -3877,6 +3877,7 @@ en:
         delete_posts_failed: "There was a problem deleting the posts."
         penalty_post_actions: "What would you like to do with the associated post?"
         penalty_post_delete: "Delete the post"
+        penalty_post_delete_replies: "Delete the post + any replies"
         penalty_post_edit: "Edit the post"
         penalty_post_none: "Do nothing"
         penalty_count: "Penalty Count"
diff --git a/lib/post_destroyer.rb b/lib/post_destroyer.rb
index ddd03120902..e0c5ff3991c 100644
--- a/lib/post_destroyer.rb
+++ b/lib/post_destroyer.rb
@@ -39,6 +39,13 @@ class PostDestroyer
     end
   end
 
+  def self.delete_with_replies(performed_by, post)
+    reply_ids = post.reply_ids(Guardian.new(performed_by), only_replies_to_single_post: false)
+    replies = Post.where(id: reply_ids.map { |r| r[:id] })
+    PostDestroyer.new(performed_by, post).destroy
+    replies.each { |reply| PostDestroyer.new(performed_by, reply).destroy }
+  end
+
   def initialize(user, post, opts = {})
     @user = user
     @post = post
diff --git a/spec/requests/admin/users_controller_spec.rb b/spec/requests/admin/users_controller_spec.rb
index 53e483f0f4d..718b735e51c 100644
--- a/spec/requests/admin/users_controller_spec.rb
+++ b/spec/requests/admin/users_controller_spec.rb
@@ -185,6 +185,26 @@ RSpec.describe Admin::UsersController do
         expect(response.status).to eq(200)
       end
 
+      it "can delete an associated post and its replies" do
+        reply = PostCreator.create(
+          Fabricate(:user),
+          raw: 'this is the reply text',
+          reply_to_post_number: post.post_number,
+          topic_id: post.topic_id
+        )
+        nested_reply = PostCreator.create(
+          Fabricate(:user),
+          raw: 'this is the reply text2',
+          reply_to_post_number: reply.post_number,
+          topic_id: post.topic_id
+        )
+        put "/admin/users/#{user.id}/suspend.json", params: suspend_params.merge(post_action: 'delete_replies')
+        expect(post.reload.deleted_at).to be_present
+        expect(reply.reload.deleted_at).to be_present
+        expect(nested_reply.reload.deleted_at).to be_present
+        expect(response.status).to eq(200)
+      end
+
       it "can edit an associated post" do
         put "/admin/users/#{user.id}/suspend.json", params: suspend_params.merge(
           post_action: 'edit',