Da Wu, 33, was fatally shot on January 20, 2015, in San Francisco’s Tenderloin neighborhood. He was found with gunshot wounds and was pronounced dead at the scene.

The shooting was recorded amid a period when homicides and violent crime in the city were rising. Authorities have appealed for tips, and the investigation remains open with no suspects publicly named as of the latest account.

If anyone saw or remembers anything about the shooting in the Tenderloin on January 20, 2015, information could be important to investigators.