An adult male bicyclist was critically injured Monday morning when he was hit by a car on Maryland Avenue a block south of the National Mall in Southwest Washington, according to D.C. police.

Authorities had few details of the accident, which occurred about 6:15 a.m. in the 600 block of Maryland Avenue, between the L’Enfant Plaza Metro and the Smithsonian Institution National Air and Space Museum. It also is near the U.S. Department of Education.

Police said the motorist stayed at the scene, though investigators said it was too early to determine who was at fault. Police said the victim appeared to be in his 30s.

Police said the victim was taken to an area hospital with life-threatening injuries.

The 600 block of Maryland Avenue SW was closed for about four hours due to the crash investigations. The street reopened in both directions around 1:30 p.m.

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