Two men were arrested at Stansted Airport on suspicion of endangerment of an aircraft today after an RAF Typhoon jet was scrambled to escort a passenger plane travelling from Pakistan to the UK, Essex Police said.
According to Manchester Airport the aircraft is a Pakistan International Airlines passenger plane which was flying from Pakistan to Manchester. It has 280 passengers on board.
The incident is not thought to be terrorism-related.
It had been been diverted to Stansted Airport in Essex where it has since landed.
It is understood the incident happened around 10 minutes before the plane, flight number PK709, was due to land in Manchester at 2pm.
A Ministry of Defence spokesman said: "A Typhoon aircraft has been launched to investigate an incident involving a civilian aircraft within UK airspace."
He added that the Typhoon is from RAF Coningsby in Lincolnshire.