QPR have held talks with defender Anton Ferdinand over allegations he was racially abused by Chelsea captain John Terry in Sunday's match at Loftus Road.
Ferdinand trained with his team-mates on Tuesday but held the talks either side of the session.
Terry has categorically denied making a racist slur but the police are investigating after a public complaint.
"We have been notified of an incident involving alleged racial abuse," said a Metropolitan Police spokesman.
"This is currently being assessed by officers from Hammersmith and Fulham."
Videos circulated on the internet in the aftermath of the game, with some claiming the footage shows Terry, 30, insulting the QPR player using racist language.
BBC Sport understands QPR are to discuss the matter further with Ferdinand.
The alleged incident happened in a bad-tempered game in which Chelsea were reduced to nine men in the first half, with Terry involved in several angry confrontations with referee Chris Foy.
Terry said in a statement: "I've seen that there's a lot of comments on the internet with regards to some video footage of me during the game.
"I am disappointed that people have leapt to the wrong conclusions about the context of what I was seen to be saying to Anton Ferdinand.
"I would never say such a thing - and I'm saddened that people would think so."
Terry added that Ferdinand, 26, had made no complaint and said the two remained on good terms.
"I have known Anton for a long time and spoke to him about it after the game and there was no problem between us," the England captain added.
"I congratulated him on their win. He has not accused me of any wrongful remark. It was clear it was all a misunderstanding at the time.
"After the result today, I am saddened to be dealing with these wrongful allegations."
Chelsea manager Andre Villas-Boas has insisted that the incident is borne out of a 'misunderstanding' and that, as far as he and the Blues are concerned, .