US police said they found four bodies yesterday after a "mass murder" at a property management company in North Dakota.
Police found the bodies of three men and a woman inside the RJR maintenance and management company in the city, police chief Jason Ziegler told a news conference.
"This is now being treated as an investigation into mass murder," he said.
Ziegler said police did not believe there was a danger to "the public at large."
"It seems to be an isolated incident ... we are looking for a suspect."