MANCHESTER - Police responded Tuesday night to an apparent bomb threat hoax at the Mall of New Hampshire.

A man notified police at about 8:30 p.m. about a note written on a rest room wall claiming there was a bomb inside the mall. Manchester police, with mall security, performed a sweep of the mall. A member of the N.H. State Police Explosives Unit, along with a bomb dog assigned to the Transportation Security Administration at the Manchester-Boston Regional Airport, assisted in the search.

The man who reported the written threat left the mall before he could be identified. Police describe him as a white male, in his 50s, about 5-feet-5-inches tall, 160 pounds. He was last seen wearing blue jeans, a long-sleeved shirt and tan or brown work boots. He had short, dark and graying hair.

Police are still investigating the source of the threat, hoping to identify its origin. Anyone with information about this incident is encouraged to contact the Manchester Police Department at 668-8711. Anonymous tips eligible for cash rewards can be made through Manchester Crimeline at 624-4040 or online at manchestercrimeline.org.