Lake County detectives are investigating a fire that destroyed a house in Finley Point. That’s an area at the southern end of Flathead Lake, northwest of Polson. Lake County’s undersheriff tells NBC Montana it was a guest house that went up in flames on Thursday morning.

Dispatchers received a call at around 8:15 am from a resident, saying it looked like there were flames on the other side of the lake. The owners of the guesthouse were out of state. Now detectives are working with the Finley Point Fire Department to figure out what sparked the fire.