Paris Hilton's brother Conrad 'threatened to kill British Airways staff on flight to London'

Paris Hilton's younger brother Conrad allegedly assaulted British Airways staff and told them he would 'kill and bury' them during an outburst on a flight to London.

The 20-year-old socialite's behaviour last July was so disruptive it made children cry. He was later arrested in LA and faces charges over the incident.

Court papers seen by the Associated Press say Hilton was in a rage for most of the 10 hour flight after breaking up with his girlfriend and wanted to smoke marijuana on board.

Flight attendants told investigators Hilton was hurling profanities throughout the flight and said he had been banned from other airlines.

Hilton is said to have taken a sleeping pill before the flight and "wasn't himself".