Sean O. Perrin, 43, was fatally shot on April 16, 2018, in the Spring Garden section of Philadelphia. Perrin was returning from the grocery store when an unknown gunman attacked him in the 400 block of North 4th Street. He was found in a parking lot with multiple gunshot wounds to his head and body and died the following day at Hahnemann University Hospital.

Investigators initially believed the shooting was not random and said the shooter may have been lying in wait. Witness accounts or leads suggested the suspect fled on foot and may have escaped in a white sedan with a sunroof. No arrests were announced shortly after the killing, and the case remained unsolved for years while police urged anyone with information to come forward.

Did anyone in the Spring Garden area see Perrin that day or notice a white sedan around North 4th Street?