March 27, 2020                        

MAPLETON, Iowa - On January 31, 2020, the Mapleton Police Department responded to a shooting incident at 306 South 5th St. in Mapleton.  A deceased male identified as Joseph Hopkins, age 16, was found inside the detached garage of the residence.  Three other juvenile males were at the residence at the time of the shooting.  The Iowa Office of State Medical Examiner has ruled Hopkins' death as a homicide and the cause of death a single gunshot wound to the head.

On March 27, 2020, Jay Lee Neubaum, age 17, was arrested in Whiting, Iowa, on one count of First-Degree Murder. First-Degree Murder is a Class A Felony.  Neubaum's bond was set at $1 million cash or surety.  Neubaum was transported to the juvenile detention center in Woodbury County.        

Agencies involved in the investigation include the Mapleton Police Department, the Monona County Sheriff’s Office, the Monona County Attorney’s Office, the Iowa Attorney General’s Office and the Division of Criminal Investigation.   

Neubaum Initial Complaint and Affidavit - March, 27, 2020

Previous press release - February 5, 2020

Previous press release - February 1, 2020

Note: A criminal charge is merely an accusation and defendant is presumed innocent until proven guilty in a court of law.   


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