FERRUM, Va. (AP) — Classes were canceled and a small private college went on lockdown Tuesday as police searched for a man who was seen with a gun on campus, officials said.

Ferrum College President Jennifer Braaten activated an alert system and ordered the school locked down after a member of the housekeeping staff reported seeing a young man walk into a residence hall with a handgun, Franklin County Sheriff Ewell Hunt said at a news conference.

All campus buildings had been searched by Tuesday evening and police said they still had no idea who the man with the gun is or whether he is a student.