SOUTH BEND, Ind. — A man has been found dead in the rubble of a fire and possible explosion Friday in northern Indiana, authorities said.

Neighbors said they heard a loud explosion, and police and firefighters arriving on the scene encountered a debris field surrounding a home that was fully engulfed in flames, police said.

The man’s body was located Friday afternoon more than 12 hours after the reported explosion, police said.

The man’s name has not been released.

Police, after talking to the family members, said they believe the explosion and fire were possibly set intentionally, but have not confirmed that.

Police and fire investigators have not determined a cause of the fire.