NEW YORK (AP) — A fire and explosion at a shipyard on New York City's Staten Island has injured at least 16 people, including three with serious injuries, the New York Fire Department said.

Someone reported two workers trapped in a confined space at the dock at about 3:30 p.m. Friday, and responding firefighters found a fire burning in the basement of a large metal structure at the dock, said Joanne Mariano with the fire department's press office.

Crews were still fighting the fire when a major explosion occurred at the site roughly 50 minutes later, she said.