An inbound Worcester Line train hit and killed a man on the tracks in Auburndale around 9:15 a.m., Transit Police report, adding he was "trespassing" on the tracks.
The man, white and in his 50s, was hit just past where the line crosses the Charles River.
Passengers on the train remained onboard until about 10:25 a.m., when a rescue train pulled up beside it and passengers transferred for the ride towards Boston.
At 9:46 a.m., Mike Murph reported from the train:
Conductor said someone was hit. All conductors are visibly shaken.