VERNON, Conn. (AP) — Connecticut authorities say an explosion has destroyed a house in the north-central part of the state, and officials say seven people, including a young child, have been taken to hospitals.

Firefighters were called to the house in Vernon at about 4:15 p.m. Thursday. Several ambulances and police also responded.

Police say seven people were in the home when it exploded. Three people were outside the house when emergency responders arrived, and four were rescued from inside the house.

The conditions of the victims haven’t been disclosed.

Authorities were searching what remained of the house for other possible victims.

The cause of the blast isn’t known. Officials from Vernon and the state fire marshal’s office are investigating.