Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Mexico City Subway Trains Collide, Killing 1 Associated Press MEXICO CITY - A two-train subway collision in Mexico City killed a male passenger, injured 41 people and disrupted service Wednesday on the bustling metro system serving this megalopolis of over 20 million people. Mayor Claudia Sheinbaum said via Twitter that one of the trains apparently reversed into the other by accident the previous night, shortly before midnight. Twenty-five of the injured were treated at the scene, and the other 16 were taken to hospitals, Sheinbaum said. All the injuries were "light to medium" and not life-threatening. Hours later, Sheimbaum's chief of staff, Rosa Icela Rodriguez, said that only four of the 16 remained in hospitals. She said the cause of the crash was under investigation. .