Joseph Troogstad, 26, was shot and killed on Thursday, July 28, 2011, at approximately 10:58 p.m. near 4700 North 20th Avenue in Phoenix, Arizona.

Witnesses reported seeing several Black males, estimated in their late teens or early twenties, in the area within about a half-hour of the shooting. Those individuals were the early focus of the investigation, but their identities and any connection to Troogstad were not made public. The Phoenix Police Department and Silent Witness asked the public for tips.

No arrests have been announced. What details about that night or the people who were nearby might help move this case forward?