MANDAN, N.D. AP and KX News:

The memorial service for the four victims of RJR Maintenance and Management will be a combined service.

Eastgate Funeral Service says it will take place at 11:00 am Tuesday at the Bismarck Community Church at 1617 Michigan Ave in Bismarck.

Robert Fakler, William and Lois Cobb and Adam Fuehrer were discovered deceased early Monday morning. 

Mandan Police have been investigating the deaths, and calling it a multiple homicide investigation.

Their bodies were discovered Monday at RJR Maintenance and Management in Mandan, a city just across the Missouri River from Bismarck. Police have classified the case as a “multiple homicide,” but investigators haven’t said how the four died or identified a suspect.

Fakler co-owned the business, while the Cobbs and Fuehrer were employees.

The memorial service is open to the public.