Marcus Spruell, 23, was shot and killed in San Francisco’s Mission District on October 14, 2013. Police responded to the scene but the case has proved difficult to solve amid a broader pattern of gun violence in the city that year.

Investigators describe the homicide as an active investigation and have appealed for tips; a reward is being offered for information that helps move the case forward. Witness reluctance is noted as a complicating factor in many local violent-crime investigations.

If anyone has information about Marcus Spruell’s death or was in the Mission District on October 14, 2013, please contact the investigators with any tips that might help close this case.