LONDON – The RAF’s Quick Reaction Alert has been dispatched to a Jet2 Airbus A321 and is currently trailing behind the commercial airliner.

ZK431, the RAF Typhoon in question, is currently escorting EXS46Y, registered as G-HLYB, an Airbus A321 with the carrier.

We will continue to update this article as more info comes in.

This is a developing story.

UPDATE #1 @ 2119UK time – The Jet2 and Typhoon are on finals into Stansted.

UPDATE #2 @ 2120UK time – The Typhoons look to be breaking away from the Jet2 as the A321 prepares for arrival.

UPDATE #3 @ 2121UK time – Not long left for the flight until landing.

UPDATE #4 @ 2122 UK time – The aircraft has landed safely and the Typhoon is about to fly past the airport, following its circling overhead.

UPDATE #5 @ 2124UK time – G-HLYB is now being escorted by two RANGER’s and OPS1 to the designated area in the airport for suspected bomb threats or terrorism.

UPDATE #6 @ 2126UK time – G-HLYB has now arrived on the designated stands.

UPDATE #7 @ 2127UK time – AviationSource will approach Jet2 for a comment regarding this incident. What we do know is that the flight originated from Dalaman and was bound for Manchester but has since diverted to London Stansted.

UPDATE #8 @ 2129UK time – Sources from Jet2 confirm that the reason for the QRA escort was a bomb threat made to the aircraft. Stansted is typically the diversion airport of choice for these matters.

UPDATE #9 @ 0902UK time – Footage has emerged of the high volume of emergency services waiting at London Stansted to respond if needed last night.

Jet2 also commented last night on the incident at hand. They said the following via a Tweet reply to AviationSource: