Massachusetts December 11, 2023 11:15 pm Boston police investigate fatal stabbing of teen in Roslindale Authorities are looking for the person who stabbed an 18-year-old to death. US & World Videos 1:54 Authorities looking for man accused of sexual assault in Cambridge 0:17 Child injured after being struck by car outside Saugus mall 2:23 Search for suspect after sexual assault reported in Cambridge 4:09 Budgets, staffing, and social media can all impact violence in schools, administrators say 2:35 Sumner Tunnel closed for weekend