Five people were killed in auto accidents yesterday in the Washington region, including a child and an adult who died in a two-car crash in Chantilly that injured four other people.

That accident occurred about 8:55 p.m. at Chantilly Road and Route 50. Police said that a child, whose age was not immediately known, was dead at the scene and that an unidentified man died about two hours later at Fairfax Hospital.

Another child, who was taken to Fairfax Hospital, was in critical condition late last night, hospital officials said.

Three people were taken to Fair Oaks Hospital, but their conditions were unknown late last night.

The accident caused Route 50 to be closed eastbound at Elmwood Drive and westbound at Galesbury Place for about three hours. No details on how the accident occurred were immediately available.

Anne Arundel County police said a man and a woman died at 1:33 a.m. when their eastbound car crashed into a construction barrier on Route 50 near Route 450 in the Annapolis area. The car burst into flames, engulfing the victims, police said.

Prince George's County police reported that a motorist died on Holly Hill Lane in Temple Hills at 9:30 a.m. when the car went off the road and caught fire. Police did not know if the victim was a man or a woman.