Passengers at several terminals of London's Luton Airport were evacuated due to a fire alarm triggered on Sunday afternoon, the airport said in a statement.

"Due to a fire alarm activation, parts of the terminal have been evacuated as a precaution. The cause of the activation is currently being investigated. Please accept our apologies for any inconvenience while this takes place," the statement said.

​Firefighters arrived at the scene shortly after the alarm was triggered.

​Flight departures were delayed due to evacuation, according to messages on social networks.

​​Shortly after the news emerged, the airport said in a statement that the incident was a false alarm.

​The reason behind the alarm's activation is being investigated.Source: sputniknews.com