“Luton Airport has been evacuated after a security alert, disrupting flights for thousands of passengers.
Pictures on Twitter show hundreds of travellers crowded outside the terminal, and a bomb disposal van at the scene.
All incoming flights have been suspended and the approach road to the Bedfordshire airport has been closed.
Sky News sources say the alert is thought to have been sparked by a checked-in suitcase that was picked up by a security scanner.
A spokeswoman for the airport said: “London Luton Airport has evacuated the terminal building after a suspicious item was found in the security search area.
The decision has been taken with the police to ensure the safety and security of passengers and staff.
“Further updates regarding the security and operations at the airport will be provided as soon as possible.”
She added: “Passengers are advised to contact their airlines to establish the status of their flights.
“We understand passengers will be frustrated by the delays they are experiencing.
“We are working closely with the police to ensure passengers are not inconvenienced unnecessarily but we must ensure that the safety and security of all our passengers and staff remains our top priority.”
A spokesman for easyJet said: “Currently passengers are unable to board or disembark flights.
“easyJet will work with the airport to ensure that our passengers can return to the terminal as soon as possible.
“Whilst this is out of our control we apologise for the inconvenience caused and would like to thank passengers for their patience and co-operation.”
Britain recently raised its terrorism alert to its second-highest level, saying Islamic State (IS) in Syria and Iraq posed the UK’s greatest-ever security threat.”
Reort from Sky News