On the night of April 23, 2015, 49-year-old food delivery driver Rendong Zheng was shot while making a delivery to the Hill Creek Apartments in the Crescentville neighborhood of Philadelphia. Witness accounts say at least a dozen shots were fired; one bullet struck Zheng in the shoulder. He tried to flee but lost consciousness and his vehicle crashed through a fence. He was taken to a hospital and pronounced dead a short time later.

Investigators charged two teenagers, a 14-year-old and a 15-year-old, as adults in connection with the killing. The younger teen, Sahmir Walker, cooperated with prosecutors and testified that 15-year-old Tyquail Duffy showed him a gun and said he intended to rob the delivery driver. Walker said Duffy demanded money and a shot was fired after Zheng said he wanted no trouble. Walker’s murder charge was later dropped and his case moved to juvenile court on a robbery charge.

Tyquail Duffy was tried as an adult. A jury acquitted him of murder but convicted him of robbery, conspiracy, carrying a gun in the street, witness intimidation, and making terroristic threats. In August 2017 he was sentenced to 17 1/2 to 35 years and ordered to pay over $7,000 toward Zheng’s funeral expenses. Did anyone in the Crescentville area see Zheng that night or have information about where the teens had been beforehand?