A woman in her forties died Saturday in the Paris metro. Her coat got stuck in a door as he got off the train, according to the Paris Autonomous Transport Authority.

An investigation into the causes of death has been opened, the Public Ministry says. According to media reports, her departure from the carriage was rushed and she was dragged away when the train started again, the RATP says. The driver was taken care of by his supervisors, the firefighters, the authority says.