Justin Ringheimer


The U.S. Marshals Service Northern Iowa Fugitive Task Force is seeking the public's assistance in locating Derrick Wolfert and Justin Ringheimer.. Wolfert and Ringheimer are both convicted sex offenders. Early this morning Wolfert and Ringheimer cut their GPS ankle bracelettes and absconded from the residential treatment facility in Sioux City. Wolfert is 6'2" tall and 160 lbs. Ringheimer is 5'11' tall and 165 lbs. The last known address for both was the residential treatment facility in Sioux City.

Anyone having information on the whereabouts of Wolfert and Ringheimer or information leading to the arrest of Wolfert and Ringheimer should contact the U.S. Marshal Service in Sioux City, IA at (712)252-0211 or Callers can remain anonymous and the information provided will remain confidential. The U.S. Marshal Service routinely works with local law enforcement agencies in locating and arresting fugitives. The Northern Iowa Fugitive Task force includes members of the Woodbury County Sheriff's Office, Dakota County Sheriff's Office, North Sioux City Police Department, Iowa State Patrol and the United States Marshals Service. For more information on the U.S. Marshals visit