Christopher Tennison, 32, was shot dead on a Brooklyn sidewalk on the evening of August 8, 2015. An argument between two men at the intersection of Atlantic Avenue and Sackman Street, on the border of Bedford-Stuyvesant and Brownsville, escalated and Tennison suffered a fatal gunshot wound to the head. Emergency responders found him unconscious and unresponsive and he was pronounced dead at the scene.

Police arrested 48-year-old Keith Brannon, who was living at a nearby men’s shelter, and charged him with murder. Authorities said robbery was the apparent motive and reported that Brannon had taken Tennison’s wallet before shooting him. At trial the jury convicted Brannon of first-degree murder; evidence included threatening text messages traced to him, and Brannon was later sentenced to 25 years to life. Tennison’s wife called him an amazing person and said the murder left the family devastated.

If anyone knew Christopher, his movements that night, or has information about the events at Atlantic Avenue and Sackman Street, please share what is known.