The Football Association were this morning awaiting referee Andre Marriner's report into Manchester City midfielder Joey Barton's shorts-dropping antics.
The 24-year-old midfielder bared his buttocks in the direction of Everton fans as he walked off the pitch at the end of Saturday's 1-1 Barclays Premiership draw at Goodison Park.
A spokesman for Merseyside Police said: 'I can confirm that we are investigating this incident. We are currently gathering evidence.
'The matter was reported to the referee, who included it in his post-match report.'
Barton's actions came as he was taunted by the home fans, and although keeper Nicky Weaver tried to stop him, he carried on.
It is the latest in a series of controversies to hit the midfielder, who signed a new four-year contract during the summer.