Marquise Matthews was 19 when he was shot execution-style on October 17, 2016, in the Kensington section of Philadelphia. He was found on the road with a gunshot wound to the head and was pronounced dead after officers and emergency responders reached him. Investigators recovered six shell casings at the scene and reviewed nearby surveillance footage.

Police say Matthews sold heroin on the 2900 block of Rosehill Street and was known for selling a brand called Block Party. On the night he was killed he was with associates in the middle of the block when an individual identified as Chris Johnson approached and opened fire; Matthews tried to dive away but was struck in the head. Johnson fled the scene and was later arrested and charged with first-degree murder. Witnesses, including Matthews’ associates, identified Johnson at trial and a jury found him guilty.

Does anyone who knew Marquise or who spent time on Rosehill Street in 2016 have information about that night or the people who witnessed it?