Billerica April 26, 2024 7:42 pm Officer hit and killed while working construction detail in Billerica, authorities say An excavator hit a Billerica police officer Friday, leaving him dead. US & World Videos 2:40 Cambridge bans right turns on red lights 2:23 Friend of John O'Keefe testifies in Karen Read trial 1:20 Police activity in Bridgewater connected to investigation 1:41 Karen Read trial Day 7: Canton police officers continue to testify 1:57 Tensions escalate as protests across Mass. colleges continue