Sean Alexander Peart, 22, was shot and killed on the afternoon of Saturday, December 19, 2015, while sitting in the driver’s seat of his Infiniti in Crown Heights, Brooklyn. First responders found him unresponsive with multiple gunshot wounds; he was taken to Interfaith Medical Center and pronounced dead.

Initial NYPD investigation reported a suspect exiting another Infiniti, shooting Peart, then fleeing in that vehicle. Authorities later connected the killing to a violent feud between rival Brooklyn street gangs, identifying Peart as a member of Real Ryte and the attackers as affiliated with the 5-9 Brims.

A federal trial years later produced a conviction for Marvin Pippins, also known as Mukk, for Peart’s murder; evidence at trial included testimony that Pippins shot Peart six times as he sat in his car. The jury rejected Pippins’s claim that the killing was personal revenge rather than gang-related. Does anyone have information about Sean’s movements that day or about the vehicle seen at the scene?