A two-story home appeared to have exploded and leveled to the ground as well as a neighboring house which had suffered severe damage and collapsed.

The cause of the enormous explosion at a house on Sunday, which could be heard miles away, was not immediately known. Officials described it as an “isolated incident.”

Six people were injured, a two-story home was leveled and two dozen other homes were damaged when a house exploded in Austin on Sunday, according to officials. Just before 11:30 a.m., emergency crews were called to a home explosion in the 10400 block of Double Spur Loop,