A fire in a Brooklyn apartment killed one man and critically injured a woman, officials said early Wednesday.

The two-alarm fire was called in around 2:05 a.m. for a blaze on the top floor of a four-story building at 155 Fifth Ave. off Lincoln Place in Park Slope, according to fire and police officials.

Firefighters found a 37-year-old man and 22-year-old woman unconscious in the apartment.

The pair was rushed to New York-Presbyterian Brooklyn Methodist Hospital, officials said.

The man died shortly after and the woman remains in critical but stable condition, police said.

Firefighters were able to control the flames an hour later.