A boat explosion at a South Florida marina has left one person dead and five others injured, officials said.

The explosion occurred Monday night at the Lauderdale Marina, Fort Lauderdale Fire Rescue said in a social media post.

Rescue workers transported five people to local hospitals, three with traumatic injuries, officials said. A sixth person was found dead in the water several hours later by the Broward Sheriff’s Office.

Fire rescue officials said they didn’t immediately know what caused the explosion.

(AP)