Video surveillance led to Mandan murder suspect
MANDAN, N.D. — Onsite video revealed that a suspect, now identified as Chad Isaak, a chiropractor from Washburn, was in and out of RJR Maintenance & Management early Monday morning in Mandan in less than 15 minutes, according to a report by Tyler J. Henry, an investigating officer with the Mandan Police Department.
According to Henry's affidavit, law enforcement officers were able to follow a video trail of evidence that early on identified a white Ford F-150 as key to the suspect's whereabouts.
The first bit of video belonged to RJR Maintenance & Management and showed the suspect entering the business at 6:47 a.m. Monday and exiting at 7 a.m. Further investigation outside the building revealed that an RJR vehicle was driven from the premises to Indigo Signs, a block away.
Another video showed the suspect walking from the area of Indigo Signs westbound toward Midway Lanes and Bill Barth Ford, where more video helped place the suspect's trail after leaving RJR.
After a tip from a McDonald's employee, whose description of someone getting into a white Ford F-150 fit the suspect, investigators viewed surveillance video showing the Ford truck leaving the McDonald's parking lot and proceeding eastbound on Memorial Highway.
Video at the Ron Lowman car dealership, about two blocks from McDonald's, showed the truck pulling into the lot, turning around and then proceeding westbound on Memorial Highway.
More video gathered from Main Street on Monday morning shows the truck continuing westbound through Mandan.
The vehicle was next spotted on video at the Flying J in Mandan, where Business Loop Interstate 94 merges into Highway 25 North.
In Oliver County, video from two businesses showed the Ford F-150 traveling near Center at about 8:30 a.m. Monday.
At about 9 a.m., video from River Ag, a business in Washburn, shows the vehicle traveling on U.S. Highway 200.
Finally, Deputy Justin Krohmer of the McLean County Sheriff's Office recognized the suspect vehicle on Thursday. Krohmer says he has known Isaak for almost two years and was a patient at the chiropractor's clinic.