Steve Radziewicz was 41 when he disappeared from Tulsa, Oklahoma. He was last seen on June 15, 2000, leaving the home he shared with a roommate and never returning. His roommate reported him missing on June 19, 2000; police found no signs of foul play at the residence and said he had not indicated plans to be away.

Radziewicz used an electric wheelchair and was described as 5 feet 6 inches to 5 feet 8 inches tall, weighing about 140 to 150 pounds, with graying hair. He was known for wearing a winter-style cap, smoking Bronson cigarettes, carrying a small leather briefcase of papers, and having a slow moving vehicle sign on his wheelchair. The Tulsa Police Department opened an investigation but the initial search produced no significant leads.

On September 30, 2010, his case was entered into the National Missing and Unidentified Persons System. The trail has remained cold and the investigation is open. If anyone knew Steve, saw him after June 15, 2000, or has information about his wheelchair or briefcase, please come forward.