UPDATE: Cause of rural Fargo house fire hard to determine, authorities say

HORACE, N.D. (Valley News Live) - UPDATE: Cass County officials say the cause of a rural Fargo house fire, or where it started is still undetermined due to the extensive damage.

Crews from across the county responded to the fire just before 4 p.m. on Tuesday, Nov. 30 at 12390 University Dr. S., which is south of Horace. The house was fully engulfed by the time responders arrived on scene and the house has since been determined to be a total loss.

Officials say it has since been determined that two occupants, Dr. David Lotzer and Nona Koslofsky, were inside the home at the time of the fire and were able to escape prior to the home becoming fully engulfed. David sustained non-life threatening injuries during the incident and has since been released from the hospital.

This investigation remains on-going. Stick with Valley News Live as we continue to follow this story.