PHILADELPHIA (WPVI) -- A crew with PGW remained on the scene early Wednesday morning after a house explosion left three family members injured in South Philadelphia.
It happened around 6:30 p.m. Tuesday on the 800 block of Jackson Street.
The gas explosion blew out the windows and led to the evacuation of six other homes on the block.
Fire officials say a family of three was in the home, a 79-year-old man, a 40-year-old woman, and a 13-year-old male.
All suffered non-life-threatening injuries.
Action News spoke with a relative who wasn't inside the home at the time.
She says she's thankful her grandfather, aunt and little cousin were not badly injured.
"My aunt and her son were somewhere upstairs. My grandfather is always downstairs. He was most affected by it," the relative said. "What I've heard from my aunt, half of his eyebrow got burnt a little bit and his hair, but he's doing fine."
The relative says there was a sinkhole outside the home this past summer, but it's unclear at this time if that is connected.
The explosion also sparked a small fire in the basement.
"It could have been a lot worse. Yeah, when you're dealing with gas, gas travels," said Assistant Philadelphia Fire Chief Rob Wilkins.
The fire marshal is continuing the investigation on what caused the explosion.
Two men were killed in that blast and five homes were destroyed when a leaking gas pipe exploded.
Just a couple of weeks ago, the family of one of the victims sued PGW claiming the gas company neglected to properly maintain the aging pipes.
PGW officials say they've invested $85-million each year into infrastructure.