Local Philadelphia news sources are reporting a natural gas explosion that killed one utility worker and injured five people, three critically.
The blast sent a fireball 50 feet high and shook up the neighborhood on Tuesday evening, reported The Philadelphia Inquirer.
The explosion killed a Philadelphia Gas Works employee and left three people in critical condition, utility spokesman Cameron Kline told the paper. Another utility worker and a firefighter were in stable condition.
Two houses and a utility truck burned in the three-alarm fire, the Philadelphia Daily News reported.
This is the third high-profile natural gas explosion in the U.S. in recent months.