UPDATE: Four found dead inside building in Mandan, North Dakota

MANDAN, N.D.- UPDATED at 4:01 p.m.

Mandan Police Department responded to a medical call at RJR Maintenance and Management at 7:30 a.m. Thursday.

Upon arriving, police discovered the bodies of three males and a female inside the building at 1106 32nd Ave. S.E. Police have not released how they were killed.

Bodies have yet to be identified and authorities have categorized the incident as a multiple homicide investigation.

Police said a suspect remains at large but emphasized there is no danger to the public based on evidence recovered at the crime scene.

Stay with KSFY News for updates.

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Original story;

Police investigating "several" bodies found at a North Dakota business are checking nearby surveillance video.

Police in Mandan say the bodies were found Monday morning after they responded to a medical call at a business. They released no other details.

Authorities were gathered outside RJR Maintenance and Management, a property management company.

The company is in a business district about 100 yards back from a busy main road in Mandan known as the Strip. Mandan is a town of about 22,000 adjoining the state capital of Bismarck.

Darin Helbling, a manager at a nearby bowling alley, says police asked to see his business' surveillance video. Helbling says it showed only a couple of vehicles on the road that separates the businesses since 10 p.m. Sunday.