Investigators are examining what caused a fire and subsequent explosion at a New York City shipyard that leaves one person dead and more than 30 firefighters and other first responders injured, according to multiple reports. The incident occurs at a metal structure measuring about 150 feet by 150 feet located at the rear of the shipyard, where the fire and explosion take place. First responders respond to the blaze and blast at the site, and injured personnel include firefighters as well as medical staff and other emergency workers, though sources differ slightly in how they describe the full group of those harmed. Officials are working to determine how the fire started and what led to the explosion, reviewing conditions at the scene and examining evidence from the damaged structure. Investigators continue their efforts into the day following the incident, with the focus remaining on identifying the cause and circumstances surrounding the fatal blast.