A man was arrested today after a passenger jet was diverted to Stansted Airport under an RAF escort.
The Etihad flight bound for London's Heathrow Airport was redirected after a passenger began making threats.
Two RAF Typhoon jets were scrambled to accompany the airliner before it landed shortly before midday.
An Essex Police spokeswoman said a 37-year-old British national was arrested at Stansted Airport.
She said: "A 37-year-old man, a British national, has been arrested following an incident onboard an Etihad Airways plane travelling from Abu Dhabi to Heathrow.
"The pilot reported a passenger causing disruption and making threats. The plane was was diverted to Stansted Airport were it landed just before midday.
"No-one has been injured and the airport has been operating normally."
A British Ministry of Defence spokeswoman said: "Typhoon aircraft were launching this morning to escort a passenger aircraft due to an incident on board.
"The aircraft landed safely at Stansted Airport."
An Etihad Airways spokeswoman said the flight, EY19, was diverted because of a passenger.
She said: "The flight was diverted from Heathrow to Stansted. This was done to offload a disruptive passenger.
"It was a question of inappropriate comments made on the flight and a disruptive passenger. There was no threat to the safety of the aircraft or the passengers."