Mandan Police release statement following Chad Isaak arrest

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RJR Maintenance & Management Homicide Suspect Arrested

On April 4th, 2019 at approximately 7:46 p.m., Mandan Police arrested Chad Isaak, 44, of Washburn on four counts of AA Felony Murder. 

On Monday April 1st, 2019 at 7:29 a.m., Mandan Police responded to a medical call at the RJR Maintenance and Management building.  Once on scene, officers found four individuals deceased.  The victims had suffered stab wounds and/or gunshot wounds.  Many hours of video surveillance were reviewed by investigators and a suspect vehicle was identified.  Further investigation led to McLean County Sherriff’s Office locating the vehicle in Washburn.  McLean County Deputies conducted a traffic stop on the suspect vehicle and detained Isaak while a search warrant was executed on the vehicle.  Evidence discovered on Isaak and in the vehicle provided probable cause to place Isaak under arrest for the murders.

Even though an arrest has been made, the investigation is still ongoing.  Investigators will continue to process evidence and gather information. At the present time, a motive for the crimes is unknown.

The Mandan Police Department would like to extend our gratitude to the citizens of Mandan for their patience and trust.  We would like to thank the extended community for providing videos, leads, tips and offers of help.  A special thanks to local, state and federal law enforcement agencies that have offered their assistance. 

At this time, please continue to keep the families and co-workers of the victims in your thoughts.  We will continue to support the employees of RJR in their time of need.

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