The full system-wide closure to all 50 stations ended about 9:20 a.m., according to BART. The agency said major delays in service to all of its destinations would follow. They announced the closure of the system about 4:25 a.m.

Bay Area Rapid Transit, the main commuter rail system for the region, was forced to close for most of the Friday morning commute.

Bay Area Rapid Transit (BART) announced Friday morning that all service is suspended, as the agency deals with a computer outage.Around 4:30 a.m. the agency first announced that the system was being suspended due to a train control system problem.