Merseyside Police on Monday will continue their investigations into allegations that Blackburn forward El-Hadji Diouf made a racist remark to a ball-boy at Sunday's Barclays Premier League match at Everton.
Police sources suggest that over the next 48 hours the Goodison Park ball-boy who has made the allegation will also be questioned.
Diouf was interviewed by police, accompanied by a Blackburn official, in a private room at Goodison Park an hour after Sunday's match.
The Senegalese international was seemingly involved in an altercation with the ball-boy during the first half.
Diouf then suffered abuse from home fans, and again when he went to take two corners in the area of the original incident.
A police spokesman said: "Merseyside Police are looking into an allegation that a 28-year-old man used racist language at the Everton match today."
The ball-boy lodged his complaint with his ground supervisor, who in turn told Everton officials, who then informed the police.
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