Jeffrey Yingling, 44, of Upland, Pennsylvania, was shot and killed in Aston on May 2, 2018. The Delaware County Medical Examiner’s Office ruled the death a homicide. Yingling was a father of two daughters, then ages 16 and 7, and remembered by family and friends as friendly, outgoing, a dirt biking enthusiast and a fan of country music.

The Aston Township Police Department and the Delaware County Criminal Investigation Division conducted the investigation. Investigators say they identified the person who fired the fatal shot, but no arrest was made and criminal charges were not filed. The Delaware County District Attorney’s Office has described the investigation as active; prosecutors have cited complications related to the shooter’s state of mind as a reason charges have been delayed.

Family and friends have held vigils and stayed in contact with detectives while seeking accountability and remembrance. If anyone has information that could help the ongoing investigation, please contact the Aston Township Police or Delaware County detectives.