A cleaner has been arrested after stealing a train before it crashed at high speed into a house, Swedish officials say.
The woman was seriously injured when the train derailed at Saltsjobaden station, southeast of Stockholm, and collided with the building, police spokesman Lars Bystrom confirmed.
She was flown to hospital in the capital city and has been arrested on suspicion of endangering the public.
The cleaner stole the four-carriage train at a depot then drove it around a mile (1.6km) before it crashed, a spokesman for train operator Arriva said.
Witnesses said the train did not slow down when it reached the station before smashing through the stop barriers at the end of the track.
No-one in the house, which sits around 50 metres from the stop barriers, was injured and there were no passengers on board the train at the time.