A cleaner stole an empty commuter train from a depot 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