Around 12:45 a.m., Alexandria Police responded to reports of a person being shot in the 100 block of Lynhaven Drive, just south of Arlington and a block away from Potomac Yard.
Officers found the victim unresponsive. He was transported to the hospital, where he was pronounced dead.
According to Alexandria Police, detectives on the case are interviewing an Arlington County deputy sheriff who was involved in the shooting.
Police have not said how the deputy sheriff was involved, but according to scanner traffic the off-duty deputy shot a man who allegedly pulled a knife on him or her.
Police are not yet releasing the identity of the victim pending notification of next of kin. The medical examiner’s office will determine the cause of death during an autopsy.
Anyone with information about the incident is asked to call the Criminal Investigations Section of the Alexandria Police Department at 703-746-6711.
Hat tip to John Antonelli