February 15, 2023 7:37 am FBI Investigating Fake School Threats Across Massachusetts An investigation into the fake threatening calls is ongoing, after two days of hoax threats caused schools to close down and tie up law enforcement. US & World Videos 3:01 Another warm and sunny day 1:26 Crews battle apartment building fire in Worcester 2:25 Jury shown photographs of John O'Keefe's clothes as testimony resumes Monday 3:13 Civil complaint alleges racial bullying at Melrose middle school 0:23 Revere police want information about abandoned dog