United States October 24, 2017 6:45 am Firefighters Battle 3-Alarm Blaze in Mattapan Firefighters responded to reports of a fire in a single story building on Blue Hill Avenue and Woodrow Street shortly before 5 a.m. on Tuesday. US & World Videos 1:29 Sumner Tunnel in Boston to close for one month 2:17 Testimony underway in Karen Read murder trial 2:03 Mass. school officials threaten to suspend student protesters 2:13 Karen Read trial Day 6: Witness testimony resumes 4:02 ‘To Catch a Contractor' series leading to changes