England’s FA on Tuesday confirmed it has begun an investigation into the allegations made by Chelsea FC that referee Mark Clattenburg used racist and xenophobic language towards John Obi Mikel and Juan Mata, respectively, during Manchester United’s 3-2 win at Stamford Bridge on Sunday.

London’s Metropolitan Police (MPS) also received a complaint about the language used by Clattenburg during Sunday’s match. On Tuesday afternoon, the MPS said it would launch its own investigation as a result of the complaint, which it said did not come from the FA or Chelsea.

In the UK, “hate speech,” which is communication of a threatening, hateful, abusive or insulting nature on account of a person’s skin color, race, disability, nationality, ethnic or national origin, religion, or sexual orientation, is a crime. The penalties for hate speech include fines, imprisonment, or both.

Meanwhile, a statement from the Professional Game Match Officials board confirmed that Clattenburg has not been picked to officiate any matches this weekend.