A natural gas explosion caused three homes in Philadelphia to collapse, injuring eight people late Monday morning, officials said.

The explosion and collapse happened around 11 a.m. in the middle of a block of brick homes in the 400 block of Daly Street in south Philadelphia.

Bricks showered onto the small street and nearly covered a car parked out front. The houses on either side of the destroyed home were badly damaged, with huge sections of masonry walls missing.

Only one of the victims was seriously hurt, officials said. He was last reported to be hospitalized in critical condition.

The other victims, including three children, were being treated for what was described as minor injuries.

This was the second recent building collapse in Philadelphia. On June 5, a four-story wall of a vacant building collapsed onto an adjacent Salvation Army thrift store, killing six people and injuring 13.

Authorities charged crane operator Sean Benschop, 42, with involuntary manslaughter and other related charges.