A man was shot and seriously wounded Saturday afternoon in northeast D.C., authorities said.

The incident occurred shortly after 11:30 a.m. in the 600 block of 57th Street NE, authorities said. A D.C. police spokesman said the man had sustained multiple gunshot wounds and was unconscious when emergency personnel arrived to take him to the hospital.

Homicide detectives were called to investigate the case, authorities said. It is unclear what sparked the shooting.

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