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Emergency services attend the scene after a derailed train crashed into the side of a residential building in Saltsjobaden outside Stockholm, Tuesday Jan, 15, 2013. A woman obtained the keys to the train and drove it away before it crashed into the building. The woman was injured in the incident and there are no reports of injuries of people in the building . Image Credit: AP

Stockholm: A cleaner stole an empty commuter train from a depot on Tuesday and drove it to a suburb of Stockholm where it derailed and slammed into an apartment building, officials said.

The woman was seriously injured in the early-morning crash and was flown to a Stockholm hospital, police spokesman Lars Bystrom said. No one else was injured.

Bystrom said the woman was arrested on suspicion of endangering the public.

Tomas Hedenius, a spokesman for train operator Arriva, said the woman, born in 1990, stole the four-car train at a depot outside Stockholm.

She then drove it about 1.6 kilometres to the end station on the railway line, where it jumped off the tracks, careered for about 25 metres and crashed into a three-story building.

Photographs from the scene showed the crumpled front car of the train buried deep into the structure.

“There were three families inside the apartment building, but no one was injured. At least not physically,” Hedenius said.

The motives of the woman, who worked for a company contracted to carry out cleaning for the train operator, were not immediately clear.

“We have only heard good things about her. We’re investigating how this could happen, and why she did what she did,” Hedenius said.

He said it’s unclear how she got the keys to the train, but added that driving it is not that complicated.

“Generally speaking that’s possible even if you’re not a train driver,” he said. “You can read about it on the Internet, or observe how others do it.”