Michael Riley, 22, was shot and killed outside the Adnader Inc. Grocery at Saint Nicholas Avenue and West 121st Street in Harlem on the evening of January 25, 2017. He had been inside the bodega with his girlfriend; as the couple exited, an earlier argument between Riley and another man on the sidewalk escalated. The other man drew a firearm and a single shot struck Riley in the head. First responders found him grievously wounded outside the store and he later died of his injuries. A worker at the bodega said the two men had been arguing that night.

The New York Police Department identified a suspect, and in early March 2017 authorities arrested 24-year-old Hector Centeno, who was charged with Riley’s murder. What did anyone in the area see that night or know about the argument beforehand?