Stanley McGraw, 56, was shot and killed on March 1, 2011, on the 1600 block of 94th Avenue in Oakland, California. His death came during a particularly violent year for the city, which recorded 110 homicides in 2011.

McGraw’s case is one of many from that year that investigators describe as difficult to clear. The city’s lower-than-average homicide clearance rate was attributed to a lack of witnesses and physical evidence, and to the challenges of investigating in neighborhoods beset by high crime and limited policing resources. Authorities have said McGraw’s killing remains unsolved and have appealed for information to help solve cold cases from that period.

If anyone has information about McGraw, his movements on March 1, 2011, or the 1600 block of 94th Avenue at that time, please contact the Oakland Police Department with a tip.