Andrew Abston, 43, was found with a fatal gunshot wound in the parking lot of the Six Nations apartment complex in Utica, New York, in the late hours of February 16, 2015. Police were called around midnight; Abston died shortly after officers arrived. The complex had a high fence and security personnel, yet an unknown assailant carried out the attack within the secured area.

Investigators developed leads early on but say their work was hindered by a general lack of cooperation from potential witnesses, including friends and family. Police identified a 26-year-old man, Vinson Wynne, as someone seen fleeing the scene; Wynne declined to cooperate and was not charged in Abston’s death.

If anyone has information about that night at the Six Nations complex or about Andrew’s movements before the shooting, please come forward.