CONROE, Texas - Two children and an adult died following a house fire in Conroe early Saturday, according to Jimmy Williams, Montgomery County Fire Marshal. 

Investigators were called to the home around 2:30 a.m. on Long Valley Court in Conroe. 

Williams said when crews arrived, the home was fully engulfed in flames and was filled with heavy smoke. Seven people were trapped inside the home -- a mother, father and their four children, as well as their grandmother, Williams said.