Christopher Johnston, 48, also known as Umar Muhammad, was fatally shot in Philadelphia on Sunday, September 17, 2023. His death came during a weekend that already saw multiple shootings across the city and added to the year’s homicide total.

Public reports provide few details about the circumstances of the shooting. It is known only that Johnston sustained fatal gunshot injuries; no motive, suspect descriptions, or arrest information has been released. The case remains an open homicide investigation by the Philadelphia Police Department.

If anyone has information about Christopher Johnston, where he was on September 17, 2023, or details that could assist the investigation, please contact the Philadelphia Police Department.