Manchester airport terminal evacuated as officials investigate threat Published: 5/25/2021 3:49:43 PM MANCHESTER, N.H. — Operations are back to normal at the Manchester-Boston Regional Airport after the terminal was evacuated as a precaution while a threat was investigated, airport officials said Tuesday. The airport posted the evacuation notice on Twitter at about 12:45 a.m. It later posted tweets that law enforcement and police dogs conducted security sweeps. Employees and passengers were returning to the building, according to a tweet posted at 1:30 a.m., and airport operations were resuming. There were no details on the nature of the alleged threat. The airport did not immediately return a message seeking comment.