Kyle Hayes, 35, was found dead of gunshot wounds in San Francisco on December 3, 2013. San Francisco Police Department officers who responded to reports of a violent altercation pronounced him dead at the scene.

Police said they faced limited witness cooperation and urged the community to come forward, including through anonymous tip lines. The department’s Homicides and Cold Cases resources were involved as part of wider efforts to address a year that saw many homicides in the city.

If anyone knew Kyle, saw activity in the area that night, or has information that could help this investigation, please share what is known with the SFPD.