A Jet2 flight from Turkey to Manchester was diverted to London Stansted Airport after reports of a “potential threat on board”.
Essex Police said the flight, from Dalaman, was escorted to Stansted, where it landed safely on Wednesday evening.
After closing the runway, Officers then established there was no threat, with onward travel organised for the passengers onboard.
The force said in a statement: “Shortly before 9pm, we received a report of a potential threat on board the flight.
A Jet2 flight from Turkey to Manchester was diverted to London Stansted Airport
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Stansted Airport
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“It was escorted to Stansted Airport, where it landed safely and was parked away from the main passenger terminal.
“The runway was closed for a short time while inquiries were carried out.
“Officers were then able to establish there was no threat on board.
“Onward travel was then organised for the passengers and the runway was reopened.”
An RAF spokesperson said: "The RAF can confirm Quick Reaction Alert Typhoon aircraft were launched this evening from RAF Coningsby to intercept a civilian aircraft that was causing concern."
In a statement, Jet2 added: "We would like to apologise to everyone onboard for any inconvenience or upset caused by this unforeseen incident.
"We understand that the authorities were alerted to a potential security threat, however this has been downgraded and the incident has been declared as over."