Blackburn forward El-Hadji Diouf has been interviewed by police following allegations made by a ball-boy at Sunday's Barclays Premier League match with Everton at Goodison Park.
Diouf was seemingly involved in an altercation with a ball-boy during the first half of Everton's 3-0 victory.
The Senegalese international is believed to have complained that the ball was not thrown back into play quickly enough.
After the match police interviewed Diouf at the stadium before the Blackburn team left.
A spokesman for Merseyside Police said: "We are looking into an allegation that a 28-year-old man used racist language at the Everton match today.''
Diouf suffered abuse from home fans at the time of the incident, and again when he went to take two corners in the area of the original incident.
An FA spokesman added: "We are aware of the incident and are awaiting reports from the match official. We will also be speaking with the police to establish what their inquiries are in the matter.''