David Sterling Jr., 26, of San Francisco, was shot and killed on September 3, 2007. His death came amid a year when the city saw a notable rise in violent crime, and concerns about gang-related activity were being raised in some neighborhoods. Specific motive and suspect information in Sterling’s case remain unclear.

Investigators reported the homicide investigation was hampered by a lack of witnesses and leads, leaving the case unsolved for a period. San Francisco police continue to list the case as open and have offered a reward for information that leads to an arrest. Authorities are urging anyone with tips to come forward.

If anyone knew David or has information about what happened on or near September 3, 2007, please share what you know with the San Francisco Police.