The Stoke City pig head stunt is the second prank at the club in a week.
On Sunday, striker Michael Owen tweeted pictures of his car pelted with eggs and flour.
The girlfriend of Stoke City striker Kenwyne Jones has criticised the prank by his team-mates that involved placing a pig's head in his locker.
She tweeted that it was "not even close to funny" as Jones is a Rastafarian, so does not eat pork:
Stoke City have issued a statement in response to reports of an incident at their Clayton Wood Training Ground on Friday, in which it is believed a pig's head was left in the locker of striker Kenwyne Jones.
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An internal investigation has been launched after a pig's head was allegedly found in Kenwyne Jones's locker in the Stoke City dressing room.
This picture was posted to American player Brek Shea's Instagram account.
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