A powerful gas main explosion rocked a northeast Philadelphia neighborhood Tuesday night, killing one utility worker and injuring five others. Three people remain in critical condition.
The blast occurred as Philadelphia Gas Works crews were repairing a rupture in a 12-inch gas main.
Authorities evacuated residents in the neighborhood about 30 minutes before the explosion happened.
The blast sent a large fireball of debris more than 50 feet into the air and ignited two homes and a truck.
"I was looking for people flying through the air. The impact was unbelievable. You could feel it in your face," said resident Chris Labovitz.
Firefighters battled the blaze for about three hours.
Crews from PGW had been dispatched to the scene to investigate reports of a gas odor when the blast occurred.
PGW says it's unclear what sparked the explosion.