Mandan: Police suspected "multiple homicide" after four people were found dead on Monday at a North Dakota property-management business centre.
The bodies of three men and a woman were discovered inside RJR Maintenance and Management in Mandan, Police Chief Jason Ziegler said.
The victims couldn't be immediately identified and police couldn't say what the cause of their death was.
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Officers were searching through the building, which includes an office area in the front and a large warehouse area in the back.
Ziegler suspected that someone other than the four people who were found dead is responsible for the killings.
He further said that the building and other businesses in the area has many surveillance cameras which may be helpful.
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