DES MOINES, Iowa – An investigation into the death of a man at the Marshalltown Residential Facility has resulted in an arrest. Authorities say Iowa DCI agents arrested and charged 36-year old Adam Younis with involuntary manslaughter and delivery of a controlled substance. He is being held in the Marshall County Jail.

Adam Mohammad Younis (IA DPS/DOC photo)

The charge is with regard to the death of 31-year old Derek Jones, who was found unresponsive in his room a little after 6-a.m., on Feb. 4th. Jones was living at the facility while on probation supervision with the Second Judicial District Department of Correctional Services. Because the death occurred in a Department of Corrections facility, the Division of Criminal Investigation (DCI) was contacted.

Younis is enrolled in a work-release program with the Department of Corrections, and was under the supervision of the 2nd Judicial District Department of Correctional Services while living at the residential facility.

An autopsy on Derek Jones was scheduled to take place at the Office of the Iowa State Medical Examiner. The incident remains under investigation. Authorities say no additional information will be released at this time.

Departments responding to the incident included the Iowa Department of Corrections, the Division of Criminal Investigation and the Marshalltown Police Department.