Security departments at London's Heathrow airport have arrested two passengers, who quarreled with the cabin crew of Pakistan International Airlines (PIA) during a Lahore-London flight, a spokesman of the national flag-carrier said Wednesday.

PIA spokesman Abdullah Khan, in a press statement, said the spat occurred when some passengers attempted to occupy bulkhead seats during the PIA's London-bound flight, whom the crew asked to vacate or pay accordingly.

Upon this, the passengers refused to vacate the bulkhead seats and started arguing with the staff, using abusive language. Besides, two passengers including a woman attacked the staff, while another tried to assault even after they went to their cabin crew galley, according to the spokesman.

After landing at the airport, he said, the matter was brought into the notice of the security authorities, who arrested the passengers after investigations.

© Pakistan Press International, source Asianet-Pakistan