Victims, three men and one woman, have not been identified positively, according to Mandas police chief Jason Ziegler, therefore neighbor has not been notified.
The Mandan police responded to a medical call at RJR Maintenance and Management, owned by Robert and Jackie Fakler, at 7.30 am on Monday. On arrival, officers discovered the four bodies inside the building.
"These four people didn't do it themselves," Ziegler said, noting that it's a pretty big crime. "Until we catch the one who did, we will look for them. The investigation does not lead us to believe that others are in danger. It looks like an isolated incident."
Judy Praus from Mandan, who says that Faklers are 35-year-old family friends, saying she spoke to the couple at a local steakhouse on Saturday. She has tried to reach them to find out what happened, but has still not heard back.
"That's what shakes me up; I don't know what's going on," said Praus, who said her husband once worked for the RJR. "It was very closeknit ̵
The North Dakota Bureau of Criminal Investigation helps with the treatment of the crime scene. The Morton County Sheriff's Office also responded. According to Ziegler, investigators at RJR, 1106 32. Ave. SE, Monday night.
"As long as it takes us to get everything we need that meets what we need from that location, they will be there," he said.
Earlier in the day, a "few" RJR employee was questioned by the police and released, according to Ziegler.
Officers also allowed several people behind the police perimeter who seemed confused and hugged others on stage, who were assembled with apparent employees of RJR.
Companies around the RJR are asked to review their security cameras footage and report something suspicious to the Mandan Police Department.
During a press conference on Monday night, Ziegler expressed his sympathy to the victims' family members.
"It is very sad that there are people in this world who would do something … what we might experience today," he said. "My hearts go out to the family members of the four victims."
"It's not something you would wake up on Monday morning and expect to call," he said. "It's been a long day. And it's going to be a long study."
RJR is a trading and housing management company that has served Bismarck-Mandan for more than 20 years, according to its website.
The company issued a statement at. 9:30 Monday Monday it would be closed.
The last crime in North Dakota involving four or more victims was probably the murder of the Neugebauer family in 1992.
WDAY News & # 39; Matt Henson contributed to this report