Mark Anderson was 28 when he was killed on May 7, 2012. He was shot multiple times in the head and upper body near the intersection of Jefferson Avenue and East North Street in Buffalo during a spring stretch when homicides were rising in the city.

Police said investigators did not believe most of the shootings that period were random and described an atmosphere of disputes being settled outside the law, with fear and retaliation affecting neighborhoods. Detectives faced a recurring obstacle: witnesses and community members often wouldn’t talk, leaving investigators to work with fragments instead of full statements.

If anyone knew Mark, was at Jefferson and East North Street that day, or has information that could help bring answers, please come forward to Buffalo police or submit an anonymous tip.