Crew members from a Pakistan International Airlines flight were detained at Heathrow after a quantity of heroin was seized from the aircraft.
Police said no arrests were made but the airline told the Evening Standard that 14 of its crew were held for 14 hours after flight PK-785 from Islamabad landed at Heathrow.
The National Crime Agency confirmed Border Force had boarded the flight and found the Class A on Monday. It said investigations were ongoing.















