Jose Mourinho claims Manchester United and Arsenal are being favoured by Premiership referees this season.
The Chelsea boss was left fuming after his main rivals were awarded controversial spot-kicks in their Premiership matches at the weekend.
"I know what happened on Saturday. I saw them," he told the Mirror after watching the Gunners win and United stretch their lead at the top of the table to six points.
Arsene Wengers team were generously awarded two penalties by Graham Poll against Tottenham on Saturday, ironically the same referee who has hung Arsenal in crucial games before.
The Red Devils were also allowed to have a free shot from the penalty spot against Middelsborough after Cristiano Ronaldo lost his balance and fell over inside the box.
"Nothing seems to change. We can say again that it doesnt go that way for us and we dont get those decisions - and the others cant say that," he added.
"We had a penalty at Sheffield United, that wasnt a penalty, given against us. I dont want to speak a lot about it, because if I speak again I will get another one of those letters from the FA. I dont want to go there. But the responsibility is on everybody - players, managers, referees, everybody - to stop it happening."