Overview
- BART said a trespasser barricaded himself alone in a building at the Hayward Maintenance Complex and was believed to be armed with a knife.
- The yard was evacuated and power was shut off, preventing trains from being dispatched from that facility.
- Green Line service continued with trains dispatched from other yards, and the agency described overall impacts as minimal with all stations open.
- As of about 8:10 a.m., the person remained inside while BART police worked to resolve the situation, and no injuries were reported.
- The first advisory posted around 4:30 a.m. noted limited Green Line service between Berryessa and Daly City.