The Natrona County Sheriff's Office is asking for the public's help in finding a man who was convicted in 1997 of third-degree sexual assault.

Rusty Dee Locke, 39, is wanted for failure to register as a sex offender. He is described as a white male standing 6'2" tall and weighing 250 pounds.

He is balding, with blonde hair, and has blue eyes.

Locke was last known to be living in the 400 block of Westshore Village Drive in Casper.

Anyone with information on Locke's whereabouts is asked to call the Natrona County Sheriff's Office at 235-9282.

Tips can also be submitted online at crime-stoppers.com or via the TipSubmit mobile app for smartphones.