MANCHESTER, N.H. (WHDH) – The Manchester-Boston Regional Airport in New Hampshire was evacuated early Tuesday morning following a bomb threat, officials said.

The terminal building was evacuated as a precaution around midnight as law enforcement, security, and K-9 teams conducted a sweep, according to airport officials.

They announced around 1:30 a.m. that employees and passengers were returning to the building and operations were back to normal.

Some passengers were stuck on their planes on the tarmac until they got the