UPDATE, 3:20 p.m.: BFD reports no more fire, but that there's still smoke from smoldering grease and trash on the tracks under the train as firefighters continue to evacuate 225 passengers. The train itself was not on fire.
An inbound train about 100 feet from Chinatown station appears to be on fire. Passengers are being escorted off the train; Chinatown station is being evacuated.
Daniel Adams reports:
Was waiting on SB Chinatown platform. 3 loud thunks, horrible chemical smoke. Fire near wheels of NB train.