Update 7 p.m. EST: NBC Philadelphia (http://bit.ly/17bnC59) reports that eight people were injured in the explosion.
The explosion destroyed at least three homes along Daly Street. From the air, debris of wood, brick and glass can be seen strewn in all directions.
Original Story: At least six people were injured when a home exploded and collapsed in South Philadelphia, Pennsylvania.
The local NBC affiliate (http://bit.ly/17P41dp) reported that at least six people have been rushed to the hospital, including four adults, a 15-year-old, and an infant.
Fire officials confirmed that it was an explosion. They say a private contractor was working in the basement of the home when the explosion occurred; he was hospitalized with burns.
Other area homes are being evacuated.
For more on this incident, visit http://bit.ly/17P41dp.
For more on firefighting operations and structural collapse, consider Structural Collapse Under Fire Conditions, Construction Concerns for Firefighters: Structural Collapse , and Drill of the Week: Structural Collapse Rescue.