Calling the fatal stabbing of a woman riding a Metro train "truly a tragedy that should have never occurred," Los Angeles County Dist. Atty. George Gascón on Wednesday announced a murder charge against a homeless man with a history of violence against passengers. Elliot Tramel Nowden was arrested Monday shortly after Mirna Soza, a 66-year-old security guard returning from her night shift, was found mortally wounded on the ground at the Universal Studios train platform. He has now been charged... Read this story