Crash investigators were at first mystified as to how and why the local commuting train crashed through the buffers at a siding in the outskirts of Stockholm in the early hours of Tuesday morning before ploughing into one of the kitchens of the building where five residents were asleep.
It later turned out that a cleaner had managed to start the train, which was unoccupied at the time, and take it for a spin.
The train had reached such a speed that the front carriage managed to fly across and bridge a narrow road before slamming into the building, some 82 feet after the buffers.
The 20-year-old woman was trapped in the wreckage for two hours before being airlifted to hospital with what rescuers described as serious injuries. All those in the apartment block escaped unscathed.
"It is absolutely incredible that this was not a really serious accident both for the woman on the train and for those in the building," said Ulf Lindgren, from the Stockholm police. "They were all very lucky."
Arriva, the railway company which owns the train, announced that it would try to establish just how the cleaner had managed to take the train.
"It was a cleaner who stole the train; somehow she managed to get into the cab and got the train moving," Tomas Hedenius, Arriva's communication's manager, told the Swedish newspaper Aftonbladet. "We are now investigating how this was possible."
Police have charged the cleaner with endangering public safety, but her motives for taking the train remain unclear.
Managers from Stockholm Transport stressed that, despite the incident, it was almost impossible to steal a train and take it on an unauthorised journey.
To err is human, to forgive, divine. Humans aren't machines... they have souls, feelings. They live, they die, they love, they hate... And yes, they even make mistakes.....
When kluang finds you creepy and wrong then you are beyond horrible.
He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you.
Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe.
Quis custodiet ipsos custodes?
Being Malaysian is about driving in a German car to an Indian restaurant for an Indonesian food, then travelling home, grabbing a Pakistani kebab on the way, to sit on Swedish furniture and watch American shows on a Japanese TV. Because we have no originality.