Three days after a train rammed into another train near AT&T Park, Muni officials are still searching for an explanation about the collision that injured 16 people, including 12 who were sent to local hospitals.
Transit officials said they will release more information this week about what caused a one-car T-Third train to rear-end a two-car N-Judah train. At the time of the incident, the N-Judah was stopped at King Street, waiting for a signal to change. Both trains were headed in the direction of the Caltrain station.
A Muni investigation will determine if it was human or mechanical error that led to the accident.
Of the 12 passengers taken to hospitals, four have been released, Muni spokesman Judson True said. No one involved in the crash suffered life-threatening injuries.
True said both train operators were tested for drugs and alcohol and placed on administrative leave, which is standard procedure.
Aaron Litwin, a freelance photographer, arrived on the scene approximately 30 minutes after the collision. He said people who witnessed the crash saw a few victims taken away on stretchers with blood on their foreheads.