The Football Association are looking at allegations Liverpool striker Luis Suarez made an offensive gesture after last night's 1-0 defeat at Fulham.
Photographs published today appear to show the Uruguay international making a gesture in the direction of the crowd as he left the pitch at Craven Cottage.
The FA are aware of the alleged incident and Press Association Sport understands they are now looking at the matter.
Liverpool manager Kenny Dalglish was cautious when quizzed after the game about the allegations.
"I've not seen the picture and I am not taking anybody's word for it," he said.
"But until you have proved it is true to me, I won't comment."
Dalglish defended the striker after he was subjected to "cheat" taunts by fans unhappy at the way the player went to ground regularly.
"Scandalous," was the Scot's reaction.
"At the end of the day, we will look after Luis the best we can and I think it is about time he got a bit of protection from some people."
Suarez is currently awaiting a date for his hearing at which he will deny an FA racism charge after allegations made by Manchester United defender Patrice Evra back in October.