Charles Williams, 25, was shot and killed on January 25, 2015, in San Francisco’s Mission District. He was found with gunshot wounds in the early hours of the morning and was pronounced dead at the scene. The San Francisco Police Department investigated, but no suspects were identified at the time and the case remained unsolved.

Authorities have asked the public for help and a reward has been offered for information leading to an arrest. Williams’ death underscored ongoing concerns about gun violence in the city and had a lasting impact on the local community.

If anyone has information about that night or Charles’s movements before he was found, contact the San Francisco Police Department.