Stoke have promised to launch an internal investigation after suggestions a pig's head was placed in the locker of striker Kenwyne Jones.
Jones is believed to have reacted furiously to the incident at Stoke's Clayton Wood training ground on Friday, which comes just two days before the club's final Barclays Premier League match of the season at Southampton.
"The club takes seriously reports of an incident at our training ground this afternoon," the club said in a statement. "A full internal investigation will be carried out and those responsible for any unacceptable behaviour will be dealt with in accordance with the club's disciplinary procedures."
Stoke midfielder Brek Shea tweeted a picture of himself with the pig's head with the words "locker room banter gone wild".
It seems the incident went beyond mere banter, however, with reports suggesting the windscreen of midfielder Glenn Whelan's car was smashed in the wake of the grizzly discovery.
When put to him by a Twitter follower that he had been responsible for the damage, Jones replied: "For your info I didn't do that get ur info correct."
Jones' partner, Kissa Abdullah, expressed her anger at the incident on her Twitter account, adding that the actions did not take into account religious beliefs.
She wrote: "Big men acting like kids a pigs head is not a prank its just disgusting!!!!! I don't get how was that sup 2 be funny!!!! Really???
"Where I come from that's not anywhere close 2 funny! Esp not knowing religious beliefs. It just takes a minute to be sensitive to someone's beliefs no one says u can't have a sense of humour but let it be a joke! This wasn't!"
The incident comes just days after retiring Stoke striker Michael Owen had his car covered in eggs and flour by team-mates. Jones was also involved on that occasion, tweeting a picture of Owen's car to his followers with the explanation that it was a "leaving present" for the former England star.