diff --git a/fptelegram.lpk b/fptelegram.lpk
index 750be5a..9f6a8ca 100644
--- a/fptelegram.lpk
+++ b/fptelegram.lpk
@@ -23,7 +23,7 @@
     </CompilerOptions>
     <Description Value="Telegram bots API library"/>
     <License Value="MIT License"/>
-    <Version Release="3"/>
+    <Version Release="3" Build="1"/>
     <Files Count="6">
       <Item1>
         <Filename Value="tgsendertypes.pas"/>
diff --git a/test/console.lpi b/test/console.lpi
index 46f6cb3..cfc67d2 100644
--- a/test/console.lpi
+++ b/test/console.lpi
@@ -1,11 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <CONFIG>
   <ProjectOptions>
-    <Version Value="11"/>
+    <Version Value="12"/>
     <PathDelim Value="\"/>
     <General>
+      <Flags>
+        <MainUnitHasCreateFormStatements Value="False"/>
+        <MainUnitHasTitleStatement Value="False"/>
+        <MainUnitHasScaledStatement Value="False"/>
+        <CompatibilityMode Value="True"/>
+      </Flags>
       <SessionStorage Value="InProjectDir"/>
-      <MainUnit Value="0"/>
       <Title Value="console"/>
       <UseAppBundle Value="False"/>
       <ResourceType Value="res"/>
diff --git a/tgsendertypes.pas b/tgsendertypes.pas
index e7e5292..318819d 100644
--- a/tgsendertypes.pas
+++ b/tgsendertypes.pas
@@ -423,6 +423,8 @@   TTelegramSender = class
     FBotUsername: String;
     FCurrentChat: TTelegramChatObj;
     FCurrentChatId: Int64;
+    FCurrentIsTopicMessage: Boolean;
+    FCurrentThreadId: Integer;
     FCurrentMessage: TTelegramMessageObj;
     FCurrentUser: TTelegramUserObj;
     FBotUser: TTelegramUserObj;
@@ -607,7 +609,7 @@   TTelegramSender = class
     function sendMediaGroupByStreams(chat_id: Int64; const ACaption: String; StreamsList:TStringList): Boolean;
     function sendMessage(chat_id: Int64; const AMessage: String; ParseMode: TParseMode = pmDefault;
       DisableWebPagePreview: Boolean=False; ReplyMarkup: TReplyMarkup = nil;
-      ReplyToMessageID: Integer = 0; DisableNotification: Boolean = False): Boolean;
+      ReplyToMessageID: Integer = 0; DisableNotification: Boolean = False; MessageThreadID: Integer = _nullThrd): Boolean;
     function sendMessageChannel(const chat_id, AMessage: String; ParseMode: TParseMode = pmDefault;
       DisableWebPagePreview: Boolean=False; ReplyMarkup: TReplyMarkup = nil;
       ReplyToMessageID: Integer = 0): Boolean;
@@ -919,8 +921,7 @@ implementation
   s_Cht='chat';
   s_ChtAdmnstrtrs='chat_administrators';
   s_ChtMmbr='chat_member';
-
-
+  s_MsgThrdID ='message_thread_id';
 
   ParseModes: array[TParseMode] of PChar = ('', 'Markdown', 'HTML');
   MediaTypes: array[TMediaType] of PChar = ('photo', 'video', '');
@@ -2080,6 +2081,8 @@ procedure TTelegramSender.DoReceiveMessageUpdate(AMessage: TTelegramMessageObj);
 begin
   FCurrentMessage:=AMessage;
   FCurrentChatID:=AMessage.ChatId;
+  FCurrentThreadId:=AMessage.MessageThreadID;
+  FCurrentIsTopicMessage:=AMessage.IsTopicMessage;
   FCurrentChat:=AMessage.Chat;
   FCurrentUser:=AMessage.From;
   if CurrentIsBanned then
@@ -2098,6 +2101,8 @@ procedure TTelegramSender.DoReceiveEditedMessage(AMessage: TTelegramMessageObj);
 begin
   FCurrentMessage:=AMessage;
   FCurrentChatID:=AMessage.ChatId;
+  FCurrentThreadId:=AMessage.MessageThreadID;
+  FCurrentIsTopicMessage:=AMessage.IsTopicMessage;
   FCurrentChat:=AMessage.Chat;
   FCurrentUser:=AMessage.From;
   if CurrentIsBanned then
@@ -2117,6 +2122,8 @@ procedure TTelegramSender.DoReceiveCallbackQuery(ACallback: TCallbackQueryObj);
     FCurrentChat:=FCurrentMessage.Chat;
   FCurrentUser:=ACallback.From;
   FCurrentChatID:=FCurrentUser.ID; { Bot will send to private chat if in channel is called } {ACallback.Message.ChatId;}
+  FCurrentThreadId:=_nullThrd;
+  FCurrentIsTopicMessage:=False;
   if CurrentIsBanned then
     Exit;
   if Assigned(FCurrentMessage) then
@@ -2133,7 +2140,9 @@ procedure TTelegramSender.DoReceiveChannelPost(AChannelPost: TTelegramMessageObj
 begin
   FCurrentMessage:=AChannelPost;
   FCurrentChat:=AChannelPost.Chat;
-  FCurrentChatID:=AChannelPost.ChatId;
+  FCurrentChatID:=AChannelPost.ChatId;  
+  FCurrentThreadId:=AChannelPost.MessageThreadID;
+  FCurrentIsTopicMessage:=AChannelPost.IsTopicMessage;
   FCurrentUser:=AChannelPost.From;
   if CurrentIsBanned then
     Exit;
@@ -2145,12 +2154,13 @@ procedure TTelegramSender.DoReceiveChannelPost(AChannelPost: TTelegramMessageObj
     FOnReceiveChannelPost(Self, AChannelPost);
 end;
 
-procedure TTelegramSender.DoReceiveEditedChannelPost(
-  AChannelPost: TTelegramMessageObj);
+procedure TTelegramSender.DoReceiveEditedChannelPost(AChannelPost: TTelegramMessageObj);
 begin
   FCurrentMessage:=AChannelPost;
   FCurrentChat:=AChannelPost.Chat;
-  FCurrentChatID:=AChannelPost.ChatId;
+  FCurrentChatID:=AChannelPost.ChatId;  
+  FCurrentThreadId:=AChannelPost.MessageThreadID;
+  FCurrentIsTopicMessage:=AChannelPost.IsTopicMessage;
   FCurrentUser:=AChannelPost.From;
   if CurrentIsBanned then
     Exit;
@@ -2168,6 +2178,8 @@ procedure TTelegramSender.DoReceiveInlineQuery(
   FCurrentMessage:=nil;
   FCurrentChat:=nil;
   FCurrentChatID:=AnInlineQuery.From.ID;
+  FCurrentThreadId:=_nullThrd;
+  FCurrentIsTopicMessage:=False;
   FCurrentUser:=AnInlineQuery.From;
   if CurrentIsBanned then
     Exit;
@@ -2183,7 +2195,9 @@ procedure TTelegramSender.DoReceiveChosenInlineResult(
 begin
   FCurrentMessage:=nil;
   FCurrentChat:=nil;
-  FCurrentChatID:=AChosenInlineResult.From.ID;
+  FCurrentChatID:=AChosenInlineResult.From.ID; 
+  FCurrentThreadId:=_nullThrd;
+  FCurrentIsTopicMessage:=False;
   FCurrentUser:=AChosenInlineResult.From;
   if CurrentIsBanned then
     Exit;
@@ -2198,7 +2212,9 @@ procedure TTelegramSender.DoReceivePreCheckoutQuery(
   APreCheckoutQuery: TTelegramPreCheckOutQuery);
 begin
   FCurrentUser:=APreCheckoutQuery.From;
-  FCurrentChatID:=FCurrentUser.ID;
+  FCurrentChatID:=FCurrentUser.ID; 
+  FCurrentThreadId:=_nullThrd;
+  FCurrentIsTopicMessage:=False;
   if CurrentIsBanned then
     Exit;
   DoAfterParseUpdate;
@@ -2234,6 +2250,8 @@ procedure TTelegramSender.DoReceiveUpdate(AnUpdate: TTelegramUpdateObj);
   FUpdate:=AnUpdate;
   FCurrentMessage:=nil;
   FCurrentChatId:=0;
+  FCurrentThreadId:=_nullThrd;
+  FCurrentIsTopicMessage:=False;
   FCurrentUser:=nil;
   FCurrentChat:=nil;
   FLanguage:='';
@@ -3503,8 +3521,8 @@ function TTelegramSender.sendMediaGroupByStreams(chat_id: Int64;
 
 {  https://core.telegram.org/bots/api#sendmessage  }
 function TTelegramSender.sendMessage(chat_id: Int64; const AMessage: String; ParseMode: TParseMode;
-  DisableWebPagePreview: Boolean; ReplyMarkup: TReplyMarkup; ReplyToMessageID: Integer; DisableNotification: Boolean
-  ): Boolean;
+  DisableWebPagePreview: Boolean; ReplyMarkup: TReplyMarkup; ReplyToMessageID: Integer; DisableNotification: Boolean;
+  MessageThreadID: Integer): Boolean;
 var
   sendObj: TJSONObject;
 begin
@@ -3522,6 +3540,8 @@ function TTelegramSender.sendMessage(chat_id: Int64; const AMessage: String; Par
         Add(s_ReplyMarkup, ReplyMarkup.Clone); // Clone of ReplyMarkup object will have released with sendObject
       if ReplyToMessageID<>0 then
         Add(s_ReplyToMessageID, ReplyToMessageID);
+      if MessageThreadID<>_nullThrd then
+        Add(s_MsgThrdID, MessageThreadID);
       Result:=SendMethod(s_sendMessage, sendObj);
     finally
       Free;
@@ -3555,9 +3575,15 @@ function TTelegramSender.sendMessageChannel(const chat_id, AMessage: String;
 
 function TTelegramSender.sendMessage(const AMessage: String; ParseMode: TParseMode; DisableWebPagePreview: Boolean;
   ReplyMarkup: TReplyMarkup; ReplyToMessageID: Integer; DisableNotification: Boolean): Boolean;
+var
+  aMsgThrdID: Integer;
 begin
+  if FCurrentIsTopicMessage then  // Need for the checking is questionable
+    aMsgThrdID:=FCurrentThreadId
+  else
+    aMsgThrdID:=_nullThrd;
   Result:=sendMessage(FCurrentChatId, AMessage, ParseMode, DisableWebPagePreview, ReplyMarkup,
-    ReplyToMessageID, DisableNotification);
+    ReplyToMessageID, DisableNotification, aMsgThrdID);
 end;
 
 { https://core.telegram.org/bots/api#sendphoto }
diff --git a/tgtypes.pas b/tgtypes.pas
index a807832..1a5d41d 100644
--- a/tgtypes.pas
+++ b/tgtypes.pas
@@ -98,10 +98,12 @@   TTelegramMessageObj = class(TTelegramObj)
     FForwardFromChat: TTelegramChatObj;
     FForwardFromMessageID: LongInt;
     FFrom: TTelegramUserObj;
+    FIsTopicMessage: Boolean;
     FLocation: TTelegramLocation;
     FMediaGroupID: String;
     fMessageId: Integer;
     fChatId: Int64;
+    FMessageThreadID: Integer;
     FPhoto: TTelegramPhotoSizeList;
     FReplyToMessage: TTelegramMessageObj;
     FSuccessfulPayment: TTelegramSuccessfulPayment;
@@ -136,6 +138,8 @@   TTelegramMessageObj = class(TTelegramObj)
     property SuccessfulPayment: TTelegramSuccessfulPayment read FSuccessfulPayment;
     property ViaBot: TTelegramUserObj read FViaBot;
     property MediaGroupID: String read FMediaGroupID;
+    property MessageThreadID: Integer read FMessageThreadID;
+    property IsTopicMessage: Boolean read FIsTopicMessage;
   end;
 
   { TTelegramMessageEntityObj }
@@ -515,6 +519,7 @@   TTelegramObjClass = class of TTelegramObj;
       TTelegramMessageObj, TTelegramMessageObj, TTelegramMessageObj, TTelegramInlineQueryObj,
       TTelegramChosenInlineResultObj, TCallbackQueryObj, TTelegramObj, TTelegramPreCheckOutQuery,
       TTelegramObj, TTelegramObj, TTelegramObj);
+    _nullThrd = 0;
 
 function AllowedUpdatesToJSON(const AllowedUpdates: TUpdateSet): TJSONArray;
 
@@ -530,6 +535,8 @@ implementation
 
   s_FileSize = 'file_size';  
   s_FileName = 'file_name';
+  s_IsTpcMsg = 'is_topic_message';
+  s_MsgThrdID ='message_thread_id';
 
 function AllowedUpdatesToJSON(const AllowedUpdates: TUpdateSet): TJSONArray;
 var
@@ -1069,6 +1076,9 @@ constructor TTelegramMessageObj.Create(JSONObject: TJSONObject);
   inherited Create(JSONObject);
   fMessageId := fJSON.Integers['message_id'];
 
+  FIsTopicMessage:=fJSON.Get(s_IsTpcMsg, False);
+  FMessageThreadID:=fJSON.Get(s_MsgThrdID, 0);
+
   fText := fJSON.Get('text', EmptyStr);
   fEntities := TTelegramUpdateObjList.Create;
   FPhoto := TTelegramPhotoSizeList.Create;