Over the next couple of decades, she developed a modest following with a series of mysteries about a librarian who investigates murders on the side, and another series about a crime-fighting cleaningwoman and karate expert named Lily Bard.
"Everything suggests it was a pure accident where several temporary and unfortunate circumstances caused the woman to set the train in motion when she was cleaning, " Paer Andersson said in a statement, according to AFP news agency.