Investigators gather outside a business where bodies were discovered.
Mike McCleary/AP
Investigators gather outside a business where bodies were discovered.
CNN —  

Four people were found dead Monday at a North Dakota business in what police are investigating as a multiple homicide.

The bodies of three men and one woman were found at the RJR Maintenance & Management office building in Mandan at about 7:30 a.m.

It’s unclear how they died, Mandan Police Chief Jason Ziegler said at a press conference. Investigators are trying to identify the victims. There is no suspect in custody, he said.

Evidence from the crime scene has been sent for analysis and police are looking at videos of the surrounding area, Mandan Police Chief Jason Ziegler said earlier this week.

RJR, which is a property maintenance and management company, has posted several short statements on Facebook saying they were closed Monday and Tuesday.

Mandan is across the Missouri River from the capital Bismarck.