They reported seeing Walton crack open a prop cabinet and roll off in a museum wheelchair. He wheeled himself out of the museum, but not fast enough — officer grabbed and handcuffed him.
Inside the museum, police found a wide swath of damage and vandalism amid the natural history and science exhibits, Williamson said.
Walton allegedly kicked in the door of a curator's office, smashed computer screens and equipment, a sewing machine, a mirror, and an alarm control panel.
He was charged with burglary and malicious mischief.
The alleged naked vandal did not appear to be under the influence of drugs or alcohol, and police admitted it was unclear what motivated the nude intruder.
"Obviously, it's not normal behavior," Williamson said.
Crime Blotter, a weekly feature of ABCNEWS.com, is compiled by Oliver Libaw.