Christopher Blackwell, 22, of Charlestown, will be arraigned this morning on charges that he tried to steal some guy's iPod when their Orange Line train pulled into New England Medical Center around 11 a.m. on Wednesday and that when the guy refused to give it up, Blackwell punched him in the mouth, according to the Suffolk County District Attorney's office.
According to a police report (PDF copy), an off-duty Boston fire dispatcher noticed the fray and ran after Blackwell, tackling him at the base of the up escalator, which then carried the two men to the top, where the firefighter kept Blackwell on the ground until a Transit Police officer could arrive to arrest him.
Innocent, etc.