One person was killed and several people hurt in a home explosion in Elizabeth Wednesday morning, and emergency crews have been racing to rescue residents from the home.

ABC 7 reports a person not identified by police was killed in the explosion that happened around 8:15 a.m. in a two-story duplex on Magnolia Street. Several people were reportedly injured.

Some of the victims were take to the burn unit at St. Barnabas Hospital in Livingston, and others to Trinitas Hospital in Elizabeth, city spokeswoman Kelly Vence told the station.

Elizabeth mayor Chris Bollwage said he was "90 percent sure it was a natural gas explosion," but it was unclear what set it off.

Several people were trapped in the house, which was looked to have taken heavy damage in the back of the house. @lulune6c on Twitter described a strong smell of gas in the air and said that onlookers and reporters were asked to move away for fear of another explosion.

"That was the biggest, loudest boom I've ever heard. I ran out of my house when I heard it. Our house shook," @lulune6c tweeted.

This is a developing story.