MBTA Transit Police say the man who allegedly assaulted a woman Thursday at the Lechmere Station in Cambridge, Massachusetts, has turned himself in.
Police said the woman was chaperoning 1st and 2nd grade children on the Green Line when she asked a man who got on at North Station to politely keep his dog away.
The man responded by using obscene language in front of the children while allegedly threatening to kill the victim. Police said he also bragged of "killing people" for less.
When the train stopped at Lechmere, police said the man physically assaulted the victim and left in the area of the Cambridge Side Galleria.
Police said the man, who has not yet been identified, turned himself in on Saturday. It's unclear what charges he will face, if any.