Kentucky ? Western Kentucky University was locked down for several hours Wednesday after reports of gunmen on campus, but officials said they could find no evidence that shots had been fired or that anyone had a weapon.

Someone reported seeing people with weapons in a building on a satellite campus and police later received reports that shots had been fired on the main campus, a mile away.

University officials said they received three 911 calls from students. The last caller reported hearing shots.

But Howard Bailey, vice president for student affairs, said at a news conference that there was no gunfire and no witnesses reported seeing weapons.