A fire started on the M-2 trackway, about 200 feet into the tunnel between Embarcadero and Montgomery stations. A train of passengers self-evacuated and walked to Montgomery. SFFD arrived and extinguished the fire. The station was kept closed until the fire department cleared and the standing water on most of the platform was removed. The station was closed either fully or partially (run throughs were eventually allowed) for about two hours. It appears as though the fire was caused by garbage being ignited by sparks, while surrounding debris and wooden railroad ties also caught fire.