Four people have been found dead in a house that burned in Lake Ozark.
The fire broke out just before 1 a.m. Thursday. The home was located off of Carol Road.
Crews arriving on the scene overnight tried to do a search, but encountered "very bad fire conditions" and had to switch to a defensive attack.
Investigators say the Otto brothers, Tyler, 14, Cason, 8, Max, 5, and Levi, 4, all died in the fire.
Tyler was watching the three others when the fire happened.
The fire chief says the cause of the fire is under investigation.