ROOSEVELT — The state driver license division office here was closed for about an hour Friday after someone phoned in a bomb threat.

Roosevelt police officer Travis Tucker said a phone call was made to the office at 1:20 p.m. The caller, whom police believe to be an adult male, based on the voice, said there was a bomb in the office and then hung up.

Tucker said the building was evacuated while officers conducted a thorough search. Employees were allowed to return to work after the search yielded no evidence of an explosive device.

The case remains under investigation.