Airport police have arrested a man after a bomb scare at Amsterdam’s Schiphol airport.

The two main airport terminals were evacuated this morning after the airport received a bomb threat. Some flights in and out of Schiphol were delayed but no cancellations have been reported. Operations are now returning to normal.

“Security has been increased at the airport,” said police spokesman Robert van Kapel.

Police said they had arrested a man who locked himself in a toilet on the upper floors of the airport and claimed he had a bomb.

The news comes as the Nigerian student who smuggled explosives onto a flight from Schiphol to Detroit prepares to be sentenced on Thursday.

He has pleaded guilty to trying to blow up the Northwest Airlines aircraft on Christmas Day 2009 by injecting chemicals into a package of pentrite explosive concealed in his underwear. He faces life imprisonment.