Two men were arrested at Stansted Airport in Essex on suspicion of endangerment of an aircraft after an RAF Typhoon jet was scrambled to escort a passenger plane travelling from Pakistan to the UK.
Police officers boarded Pakistan International Airlines flight PK709, which had been bound for Manchester, after it landed at Stansted and removed the men from the plane.
"Essex Police have boarded a passenger plane diverted to Stansted Airport and two men have been arrested on suspicion of endangerment of an aircraft. They have been removed from the plane."
The RAF jet was scrambled following an incident around 10 minutes before the plane, which departed from Lahore, was due to land in Manchester at 2pm.
The incident is not thought to be terrorism-related at this stage, it is understood.