Just when you thought it was safe to go back into the gymnasium, along comes "The Return of the Living Bats: Part II."

The bothersome creatures have popped up again at the University of Central Florida's gymnasium - dubbed the "Batcave" in October after the furry fliers made their first appearance - this time during a graduation ceremony.University officials said at least three bats showed up Friday for commencement exercises.

Two bats buzzed graduates and other members of the audience before the ceremonies and a third whizzed past students as they walked to the stage to get their diplomas, university spokesman Dean McFall said.

The Mexican free-tail bats - with wingspans averaging less than 6 inches - were captured and killed by animal control officers after the ceremony.