September 13, 2019 12:30 pm Square Named for Teen Killed in Merrimack Valley Explosions The Lawrence, Massachusetts, teenager killed one year ago when a series of explosions caused by over-pressurized natural gas lines devastated the Merrimack Valley, was remembered on Friday. US & World Videos 3:05 100 protesters detained at Northeastern University 2:39 Community mourns police sergeant killed on duty 2:50 Community mourns Billerica police sergeant killed on duty 4:32 Anti-war protester at Northeastern speaks amid arrests: ‘We are peaceful students' 10:42 Multiple people arrested as police clear campus encampments
