A child and an elderly man were killed, another child was in critical condition last night and five adults suffered minor injuries in three fires in Northwest Washington yesterday, District of Columbia fire officials said.

Five-year-old Nicole Faulk was pronounced dead at the District's Children's Hospital, and her 3-year-old brother, Duane, was in critical condition after a fire that broke out in their home at 1430 Belmont St. NW, hospital officials said.

According to fire officials, firefighters George McDuffy and Joe Healy found the children lying unconscious on the living room floor. The fire, which was reported at 4:46 p.m., began in the bedroom of the apartment, officials said, and thick dense smoke prevented the children's mother or neighbors form rescuing them.

James E. Moore, 74, was killed earlier yesterday in a two-alarm fire at his home at 1721 21st St. NW which began, according to D.C. police, when Moore fell asleep while smoking. He was pronounced dead at the scene of the fire, which was confined to his third-floor apartment in a four-story brick building, police said.

A woman in an adjoining apartment, identified by George Washington University Medical Center spokesman as Sailey Min-chih, 28, was treated for smoke inhalation and released.

In the third fire at 929 E St. NW yesterday, four District of Columbia firefighters suffered minor injuries fighting a blaze in the ninth floor auditorium of a building used by the University of the District of Columbia, fire officials said.

The injured firefighters, two of whom were struck by portions of a collapsing roof, were treated at the Washington Hospital Center and released.