October 15, 2018 4:22 pm Police Discuss Suspicious Letter Found at Sen. Susan Collin's Maine Home Police are investigating after a suspicious letter was sent to the Maine home of U.S. Sen. Susan Collins. US & World Videos 2:09 President of MIT calls for shutting down pro-Palestinian encampments 1:00 Three dead in apparent murder-suicide in Lowell 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