Massachusetts December 27, 2019 11:15 pm Massive Fire Destroys Historic Mansion in Concord Firefighters have been on the scene of a mansion fire since Friday morning. US & World Videos 10:42 Multiple people arrested as police clear campus encampments 1:40 Heavy police presence near on-campus protests 4:17 Police presence grows at pro-Palestinian encampment at Northeastern 5:39 Billerica police sergeant hit and killed by excavator during construction detail 2:37 Quincy detective resigns amid allegations of ‘unwelcome, sexually explicit conduct'