P Diddy arrested after attacking son's American football coach

Rapper P. Diddy was in police custody after he allegedly assaulted his son's football coach using a weight-room kettle bell.

The incident in which no one was injured is said to have taken place at the athletic facilities of US university UCLA, where the rapper's son is on the football team, police said.

Gossip website TMZ reported a fight with strength and conditioning coach Sal Alosi erupted after the young player was told not to come back until the end of the summer.

P. Diddy at the back of a Police Car

P. Diddy, 45, whose real name is Sean Combs, was freed after posting bail of between £31,500 and £100,000 several hours after his arrest, according to conflicting accounts from jail records and sheriff's officials.

His son Justin Combs is a redshirt junior defensive back on the UCLA football team but has played just a handful of games in his three years with the side.

Football coach Jim Mora thanked his staff for their professionalism in handling the situation.

"This is an unfortunate incident for all parties involved," he said in the statement from campus police. "While UCPD continues to review this matter, we will let the legal process run its course and refrain from further comment at this time."