Shawn Costen, 21, was shot and killed in Chester, Pennsylvania, on the evening of April 28, 2014. A Chester High School graduate who worked as a short-order cook, he was found with a gunshot wound to the neck in the 1400 block of Congress Street and pronounced dead at the scene at about 8:51 p.m. His death was recorded as the tenth homicide in Chester that year and the fourth in April.

The investigation was handled by Chester Police and Delaware County detectives, who asked the public to come forward with information.

If anyone saw activity in the 1400 block of Congress Street that night or has information about Shawn’s murder, please contact the Chester Police Detective Division or the Delaware County Criminal Investigation Division.