Authorities: Explosion at Florida shopping plaza injures 21

A vacant pizza restaurant exploded Saturday in a thundering roar at a South Florida shopping plaza, injuring more than 20 people as large chunks of concrete flew through the air.

The blast flung debris widely along a busy road in Plantation, west of Fort Lauderdale. The restaurant was destroyed, and nearby businesses and cars were damaged.

Though firefighters found ruptured gas lines afterward, authorities said it was too early to determine a cause.

"We thought it was thunder at first, and then we felt the building shake and things started falling. I looked outside and it was almost like the world was ending," said Alex Carver, a worker at a deli across the street from the explosion. "It was nuts, man. It was crazy."
"If this had happened a minute before when we were getting the kids in the car, it would have been really bad."