Fire officials say a gas leak caused an explosion in the boiler room of a penthouse at a Miami-area high-rise, injuring at least four people.
Muria Serrano, public information officer for Miami-Dade Fire Rescue, says two people were taken by air to a trauma center.
The explosion happened Friday at the top of a high-rise residence in Sunny Isles Beach, a city about 20 miles north of Miami.
Further information was not immediately available.
