London Luton Airport has been evacuated after a security alert was reportedly triggered by a fire.
Photos from the airport show passengers carrying their luggage outside as the evacuation takes place.
The airport's official website currently shows flights arriving and departing on time, and a spokeswoman said she was still ascertaining what had sparked the alert.
Flight FR338 was due to depart for Dublin at 2.15pm followed by a flight at 2.20pm to Slovakia and Lithuania.
London Luton is the home to low-fare airlines including easyJet, Monarch and Ryanair.
Thousands of passengers were evacuated from the airport last September after a bomb squad carried out a controlled explosion at its departure terminal.
Amid "chaotic" scenes, the approach road to the airport was also closed, while flights were diverted 50 miles away to Stansted Airport.
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