Chelsea 14 hours ago Massive fire breaks out at abandoned mill in Chelsea Authorities are investigating what caused a Chelsea building to go up in flames overnight. US & World Videos 1:35 Dog shot by Boston police after biting 4 people 1:45 Crews battle Milton brush fire as dry conditions persist 1:30 Five people injured in fiery crash in Harwich 2:18 Local leaders raise concerns about Trump's deportation plans 1:59 4 injured in Roxbury dog attack
