September, 22, 2023

OTTUMWA, IOWA - The Ottumwa Police Department and the Iowa Division of Criminal Investigation is seeking the public’s assistance in locating Gregory Allen Showalter Sr.  Showalter has an arrest warrant for Failure to Appear- Murder in the First Degree. The case was being held in Wapello County District Court. Showalter was not present when the jury found him guilty today, September 22, 2023, for the murder of his wife in August of 2021. If you see Gregory Showalter Sr., or know of his whereabouts, please contact 911 or the Ottumwa Police Department at 641- 683-0661.

Gregory Allen Showalter, 63 years old. Height of 6'2" and weighs 160 lbs.  Showalter is considered armed and dangerous.        

Photo of Gregory Allen Showalter 

Showalter Booking Photo


The Iowa Department of Public Safety (DPS) is the largest law enforcement agency in the state. It includes six divisions and several bureaus, all working together with local, state and federal government agencies and the private sector, to keep Iowa a safe place by following our core values: leadership, integrity, professionalism, courtesy, service and protection. Divisions within the Iowa DPS: Iowa Division of Criminal Investigation, Iowa Division of Narcotics Enforcement, Iowa State Patrol, Iowa State Fire Marshal Division, Iowa Division of Intelligence and Fusion Center, and Administrative Services Division. The Department of Public Safety is led by the Commissioner who is appointed by the Governor.

Iowa Department of Public Safety
215 E 7th St
Des Moines IA 50319

Public Information Officers (PIO)

Mitch Mortvedt, Director, PDSS

Iowa Division of Professional Development & Support Services
Oran Pape State Office Building

215 E 7th St
Des Moines, IA 50319


Director of the Division of Professional Development & Support Services.