At least one person was killed after three rowhome buildings partially collapsed in an explosion in Philadelphia's Nicetown neighborhood early Sunday, sending at least two other people to hospitals, officials said.

Neighbors say the explosion that caused multiple rowhomes to collapse in the Nicetown section of Philadelphia Sunday morning woke them up and shook their homes. "It just sounded like a bomb, a large bomb. A very large bomb," said Jamil Harris, who lives in Nicetown.