Jose Mourinho believes there is a campaign to influence referees’ decisions against his Chelsea side.
Mourinho was angry at referee Anthony Taylor for not awarding a penalty during the 1-1 draw at Southampton.
Midfielder Cesc Fabregas was booked for diving after going down in the area under Matt Targett’s challenge.
After the game Mourinho told bbcsport: “The media, commentators, other managers are all doing it [putting pressure on referees].”
In his news conference later, he added: “There is a campaign against Chelsea. I don’t know why there is this campaign and I do not care.
“Everybody knows it was a penalty. The referee made a mistake, people make mistakes and he made a big mistake. He is a good referee and a good guy, he is young, he has years and years of football ahead of him but it is a big mistake.”
Referee Taylor deemed Fabregas to have taken a dive under pressure from Targett, but there appeared to be contact from the 19-year-old full-back.
Fabregas, who protested against the decision, said: “There was definitely contact, the referee didn’t have the best game of his life and I don’t think he will sleep that well tonight, he had an awful game.”