Isaak opened Isaak Chiropractic of Washburn on Main Avenue in 2015, according to a feature story on Isaak in a 2015 supplement to the McLean County Independent. Isaak first opened a practice in Hazen in 2006, the news story said.

The chief said a motive for the killings is unknown. He would not comment on whether investigators had recovered a weapon or weapons. Ziegler also said he could not offer a time frame for the homicides and emphasized the investigation is still active.

Ziegler said police had not received a report from the State Medical Examiner’s Office.

Police discovered the bodies after receiving a 911 call for a medical assist about 7:30 a.m. Monday to the business at 1106 32nd Ave. S.E.

The Mandan Police Department declined a request from The Bismarck Tribune for the audio or transcript of the 911 call, citing the ongoing investigation as the reason for not releasing the information.

Mandan Mayor Tim Helbling thanked emergency responders and community members for their parts in the case and supporting those involved.