Senegal international El Hadji Diouf has been interviewed by police after the Blackburn Rovers striker was alleged to have used racist language towards a ball-boy during his side's 3-0 defeat at Everton.
The former Liverpool and Bolton Wanderers star was interviewed at Goodison Park by officers after he was said to have complained that the ball had not been thrown back to him quickly enough.
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 has often courted controversy in the past, being involved in several incidents when he was accused of spitting at fans and opposition players.
Meanwhile, Rovers boss Sam Allardyce could not believe how badly his side defended at Goodison, saying after the heavy defeat: "We're very disappointed with the nature of the defeat and the way in which we conceded the goals.
"I think we've gifted Everton the three points today rather than Everton being on blistering, top form and they've taken full advantage of the gifts we've given them.
"Two set-pieces - a corner and a free-kick. We've spent an awful long time on making sure we didn't concede goals in that way and we have done, and that's what's cost us the game.
"We're hugely disappointed with that and we've got to put that right for when we play on Tuesday night at (Nottingham) Forest in the Carling Cup."