VIDEO: A New York City firefighter died in the line of duty after suffering a medical emergency while battling a fire in Brooklyn on Saturday night.

Authorities said Patrick Brady was operating on the roof of an all-hands fire at 9407 Kings Highway on Saturday evening, Nov. 8, when he experienced a medical episode and went into cardiac arrest.

Crews at the scene immediately began life-saving measures, and the firefighter was transported to Brookdale University Hospital Medical Center, where he died shortly after arrival.

The FDNY said Brady, 42, was a veteran member of the department and that a full investigation is underway.

“Firefighter Patrick Brady gave his life protecting the city we all love; there is no sacrifice that is more selfless than the actions that took place this evening,” said Mayor Eric Adams.

WNYW-TV FOX 5 New York City