(Reuters) - A Boston-area man was arrested for stealing a woman's cell phone moments after witnessing a commuter train striking and killing her, authorities said on Saturday. The 26-year-old Brockton man turned himself in on Friday and is expected to be charged with larceny on Monday in Boston Municipal Court, the Massachusetts Bay Transportation Authority police said in a statement. The man was on a downtown Boston train platform at about 9:45 p.m. local time on Thursday when the woman was struck and killed by a commuter train, police said. ...

More...