Brian Keith Tchiyuka, a 46-year-old Black man and U.S. Air Force veteran who served during the Persian Gulf Conflict, was fatally shot on the evening of December 9, 2015, in the 2400 block of Guilford Avenue in Baltimore, Maryland. At the time he worked for the National Cemetery Administration and had previously served as a police sergeant with the U.S. Department of State.

His killing came during a particularly violent year for Baltimore. Investigators faced a lack of forthcoming witnesses, which complicated efforts to reconstruct what happened that night. No arrests or suspects have been identified in connection with his death, and the case remains unsolved.

If anyone knew Brian, was in that neighborhood on December 9, 2015, or has information that could help his family and investigators, please come forward.