Cops were called to the Mondrian Hotel in West Hollywood at 4:20 AM, after John Rich got into it with Jerry Montano, a former bassist of the rock band Danzig. It appears someone got whupped, because paramedics responded to the scene at 4:28 AM. We're told one of the dudes was treated for a bloody nose but no one was transported to the hospital.
Cops say they're investigating the incident but no arrests have been made -- at least so far. Neither guy wanted to press charges against the other.