Sixteen-year-old Jeferson Dionisio Mendoza Lopez was last seen on August 9, 2025, at a residence in the 500 block of Macie Court in Addison, Illinois. He left without taking extra clothing or personal items, a detail that family and investigators say suggests he did not plan to be away long. The Addison Police Department was notified two days later and opened an investigation.

Jeferson is described as a Hispanic male with black hair and brown eyes, standing between 5 feet 3 inches and 5 feet 5 inches and weighing between 200 and 215 pounds. His case was entered into NamUs and the National Center for Missing & Exploited Children circulated a poster with his photograph and details. The investigation remains active and the family continues to seek news of his whereabouts.

If anyone in Addison or the surrounding area saw Jeferson around August 9, 2025, or has information about where he might be, please come forward.