Did he call for it?
In the past when this has happened, it was the fault of a cocky expat pilot shooting off at the mouth while drunk!
I've had to step in a couple of times to break up visiting pilots and locals. Some guys seem to think that they own the countries they visit.
Last case was an Etihad Captain going up to a Singaporian guy and aggressively telling him to "f*** off" as he was talking to one of the Cabin Crew in the bar. Speaking to the girl later, she said she never had a problem talking with the guy and I didn't notice him act in a uncouth manner.
Of course the New Asia bar manager took the side of the Eithad Captain, whom was staying at the hotel, till I called the hotel manager who is a friend. Good news, a letter has been sent to Eithad about the behaviour of the Captain. Hopefully, he is now looking for employment elsewhere.