By Associated Press - Thursday, April 1, 2021

MANDAN, N.D. (AP) - A motive still has not been established two years after four people were found fatally shot and stabbed at a Mandan property management company and their accused killer moves toward his trial date, police said.

RJR Maintenance & Management co-owner Robert Fakler, 52, and employees Adam Fuehrer, 42, Bill Cobb, 50 and his wife, Lois Cobb, 45, were found slain at the business on April 1, 2019.

A Washburn chiropractor who lived in a mobile home park managed by RJR, Chad Isaak, is charged with four counts of murder. His trial is set to begin June 7 after earlier postponements.



The 46-year-old Isaak was taken into custody three days after the slayings, but despite the quick arrest and evidence that has been gathered, no motive for the killings has been established, Mandan Deputy Police Chief Lori Flaten told the Bismarck Tribune.

RJR officials have said they had few interactions with Isaak.

“We have not received any insight on a motive, nor have we been able to find any insight internally,” said Fakler’s wife, Jackie. “Our thoughts on the motive, finding a motive is not going to bring back the precious lives we lost. Nor will any reason be justified.”

Isaak has remained behind bars at the Burleigh Morton Detention Center on $1 million bail since his arrest.

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