A Brooklyn man is dead after a blaze inside a public housing complex Saturday, police and fire officials said.

Flames broke out on the fifth floor of a building at NYCHA’s Marlboro Houses on West 8th St. near 86th St. in Gravesend at about 1:45 p.m., authorities said.

Roughly 65 of New York’s Bravest responded to the fire, where they found a 63-year-old man lying unresponsive in his fifth-floor apartment, police said.

The unidentified man was rushed to NYC Health and Hospital/Coney Island, where he was pronounced dead.

Three others were injured while tackling the blaze — two firefighters and one EMS worker, who all sustained minor injuries, fire officials said.

The fire was placed under control shortly after at 2:20 p.m.

The victim’s name was being withheld while family was notified.