Update on May 22, 2026: Justin Prager has been located deceased. We extend our heartfelt condolences to his family, loved ones, and everyone affected by this devastating loss.
May 3, 2026 — Underground Mysteries
SWARTHMORE, Pa. — More than three months after his disappearance, 29-year-old Justin Mark Prager remains missing, and his family says that is highly out of character for him to not make contact for this long.
Prager was last seen on Kenyon Avenue in Swarthmore, Delaware County, Pennsylvania on January 28, 2026, during the region’s first major snowstorm of the season. According to his family and community posts circulating online, he reportedly left a residence without any belongings. He has not been seen or heard from since. The circumstances surrounding his disappearance have raised additional questions to Prager’s loved ones.
Upon researching his case, I did see a court matter from January 28, 2026 with the Swarthmore Police Department, the date of his disappearance. It is unclear if he made it back to his residence after tending to this matter or if this happened after his disappearance.
Born April 21, 1996, Prager was 28 years old at the time of his disappearance. His birthday was just 12 days ago.
Prager grew up in Delaware County, where most of his family still resides. He can be described as a Caucasian / White male with light brown / strawberry blond hair and brown eyes.
“We are deeply concerned for his safety,” one family member wrote in a public plea. “He has made absolutely no contact with family or friends. This is not normal behavior for Justin,” the relative added.
Anyone with information is urged to call the family at 610-348-0165, the Springfield Township Police Department at 610-544-1100, and / or the Swarthmore Police Department at 610-543-0123.
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