Chris Crowder, 44, was shot dead in the early morning hours of July 8, 2006, in a park on the 600 block of N Street NW in Washington, D.C. Police found him between 3:00 and 4:00 a.m. next to his wheelchair; Crowder had been paralyzed from the waist down after a prior 1990 shooting. A second man, described as a witness, was also shot and taken to a hospital in critical condition.

Crowder was a well-known political activist who had campaigned on homelessness, affordable housing, and youth issues and had filed to run for mayor at the time of his death. Investigators canvassed the neighborhood and said they were exploring dispute, robbery, or random violence as possible motives, but no immediate motive had been identified.

No arrests have been publicly announced. Does anyone have information about that night or about people who might have seen activity on the 600 block of N Street NW between 3:00 and 4:00 a.m. on July 8, 2006?