Antonio Allen Washington Sr. was 35 when he was fatally shot on Duncan Street in Northeast Baltimore on Sunday, April 17, 2016. A Black male and an off-duty security officer at the time, he was found dead after the shooting that evening.

Baltimore police released a surveillance photograph in early May 2016 identifying a man they described as a person of interest in the case and asked the public for help.

Who knew Antonio or saw anything on Duncan Street that night that might still help investigators?