Boston June 29, 2017 7:00 pm Search for Cause of Massive Dorchester Fire The cause of a huge fire that broke out in Boston’s Dorchester neighborhood remains under investigation. US & World Videos 2:11 Julie Nagel takes the stand in Karen Read trial 0:33 Marshfield middle school on lockdown after incident at Starbucks 1:55 Karen Read trial Day 12: Julie Nagel to testify again 2:07 Bruins force Game 6 with win over Panthers in Florida 1:56 Car hits and injures young child in Norwood