diff --git a/doc/12-icinga2-api.md b/doc/12-icinga2-api.md
index f74591b7a..de12880ba 100644
--- a/doc/12-icinga2-api.md
+++ b/doc/12-icinga2-api.md
@@ -1204,7 +1204,11 @@ been removed the next notification will be sent again.
 
 Send a `POST` request to the URL endpoint `/v1/actions/remove-acknowledgement`.
 
-A [filter](12-icinga2-api.md#icinga2-api-filters) must be provided. The valid types for this action are `Host` and `Service`.
+  Parameter | Type   | Description
+  ----------|--------|--------------
+  author    | String | **Optional.** Name of the removal requestor.
+
+In addition to these parameters a [filter](12-icinga2-api.md#icinga2-api-filters) must be provided. The valid types for this action are `Host` and `Service`.
 
 The example removes all service acknowledgements:
 
@@ -1272,7 +1276,11 @@ Icinga 2 when [adding a comment](12-icinga2-api.md#icinga2-api-actions-add-comme
 
 Send a `POST` request to the URL endpoint `/v1/actions/remove-comment`.
 
-A [filter](12-icinga2-api.md#icinga2-api-filters) must be provided. The valid types for this action are `Host`, `Service` and `Comment`.
+  Parameter | Type   | Description
+  ----------|--------|--------------
+  author    | String | **Optional.** Name of the removal requestor.
+
+In addition to these parameters a [filter](12-icinga2-api.md#icinga2-api-filters) must be provided. The valid types for this action are `Host`, `Service` and `Comment`.
 
 Example for a simple filter using the `comment` URL parameter:
 
diff --git a/lib/icinga/apiactions.cpp b/lib/icinga/apiactions.cpp
index 71ccea0b1..c4a3edb6a 100644
--- a/lib/icinga/apiactions.cpp
+++ b/lib/icinga/apiactions.cpp
@@ -245,7 +245,7 @@ Dictionary::Ptr ApiActions::RemoveAcknowledgement(const ConfigObject::Ptr& objec
 			+ object->GetName() + ".");
 
 	checkable->ClearAcknowledgement();
-	checkable->RemoveCommentsByType(CommentAcknowledgement);
+	checkable->RemoveCommentsByType(CommentAcknowledgement, HttpUtility::GetLastParameter(params, "author"));
 
 	return ApiActions::CreateResult(200, "Successfully removed acknowledgement for object '" + checkable->GetName() + "'.");
 }
@@ -280,12 +280,18 @@ Dictionary::Ptr ApiActions::AddComment(const ConfigObject::Ptr& object,
 Dictionary::Ptr ApiActions::RemoveComment(const ConfigObject::Ptr& object,
 	const Dictionary::Ptr& params)
 {
+	auto author (HttpUtility::GetLastParameter(params, "author"));
 	Checkable::Ptr checkable = dynamic_pointer_cast<Checkable>(object);
 
 	if (checkable) {
 		std::set<Comment::Ptr> comments = checkable->GetComments();
 
 		for (const Comment::Ptr& comment : comments) {
+			{
+				ObjectLock oLock (comment);
+				comment->SetRemovedBy(author);
+			}
+
 			Comment::RemoveComment(comment->GetName());
 		}
 
@@ -297,6 +303,11 @@ Dictionary::Ptr ApiActions::RemoveComment(const ConfigObject::Ptr& object,
 	if (!comment)
 		return ApiActions::CreateResult(404, "Cannot remove non-existent comment object.");
 
+	{
+		ObjectLock oLock (comment);
+		comment->SetRemovedBy(author);
+	}
+
 	String commentName = comment->GetName();
 
 	Comment::RemoveComment(commentName);
diff --git a/lib/icinga/checkable-comment.cpp b/lib/icinga/checkable-comment.cpp
index b2184e1ff..88f5a5207 100644
--- a/lib/icinga/checkable-comment.cpp
+++ b/lib/icinga/checkable-comment.cpp
@@ -18,15 +18,21 @@ void Checkable::RemoveAllComments()
 	}
 }
 
-void Checkable::RemoveCommentsByType(int type)
+void Checkable::RemoveCommentsByType(int type, const String& removedBy)
 {
 	for (const Comment::Ptr& comment : GetComments()) {
 		/* Do not remove persistent comments from an acknowledgement */
 		if (comment->GetEntryType() == CommentAcknowledgement && comment->GetPersistent())
 			continue;
 
-		if (comment->GetEntryType() == type)
+		if (comment->GetEntryType() == type) {
+			{
+				ObjectLock oLock (comment);
+				comment->SetRemovedBy(removedBy);
+			}
+
 			Comment::RemoveComment(comment->GetName());
+		}
 	}
 }
 
diff --git a/lib/icinga/checkable.hpp b/lib/icinga/checkable.hpp
index 498cb1d8f..a5d34725b 100644
--- a/lib/icinga/checkable.hpp
+++ b/lib/icinga/checkable.hpp
@@ -133,7 +133,7 @@ public:
 
 	/* Comments */
 	void RemoveAllComments();
-	void RemoveCommentsByType(int type);
+	void RemoveCommentsByType(int type, const String& removedBy = String());
 
 	std::set<Comment::Ptr> GetComments() const;
 	void RegisterComment(const Comment::Ptr& comment);
diff --git a/lib/icinga/comment.ti b/lib/icinga/comment.ti
index 9e2a4f09a..678bcabd8 100644
--- a/lib/icinga/comment.ti
+++ b/lib/icinga/comment.ti
@@ -71,6 +71,8 @@ class Comment : ConfigObject < CommentNameComposer
 	[config] bool persistent;
 	[config] Timestamp expire_time;
 	[state] int legacy_id;
+
+	[no_user_view, no_user_modify] String removed_by;
 };
 
 }
diff --git a/lib/icingadb/icingadb-objects.cpp b/lib/icingadb/icingadb-objects.cpp
index 0cbc96d23..8b0dcf18f 100644
--- a/lib/icingadb/icingadb-objects.cpp
+++ b/lib/icingadb/icingadb-objects.cpp
@@ -1489,7 +1489,7 @@ void IcingaDB::SendRemovedComment(const Comment::Ptr& comment)
 		"comment_id", GetObjectIdentifier(comment),
 		"environment_id", SHA1(GetEnvironment()),
 		"entry_time", Convert::ToString(TimestampToMilliseconds(comment->GetEntryTime())),
-		"author", Utility::ValidateUTF8(comment->GetAuthor()),
+		"author", Utility::ValidateUTF8(comment->GetRemovedBy()),
 		"comment", Utility::ValidateUTF8(comment->GetText()),
 		"entry_type", Convert::ToString(comment->GetEntryType()),
 		"is_persistent", Convert::ToString((unsigned short)comment->GetPersistent()),