Stansted airport in the UK had to be partially evacuated after a shuttle bus caught fire, causing disruption for thousands travelling on the Good Friday holiday.
Videos and photos posted on social media show a thick cloud of black smoke rising into the sky.
Passengers said that the scene was chaotic, with thousands held inside the terminal, then put through security for a second time.
The cause of the fire, which completely destroyed the bus and caused smoke damage to the building, is being investigated.
Nobody was harmed in the incident.