Ellisya Santoso was four years old when she was last seen in the Philadelphia area on November 30, 2008. She was described as an Asian female with black, shoulder-length hair often in pigtails, brown eyes, about 3 feet tall, 50 pounds, and with a noticeable scar on her upper right arm.

Authorities believe Ellisya was taken by her non-custodial father, Budi Muyla Santoso, then 32 and described as Asian, about 5 feet 9 inches to 5 feet 10 inches tall, roughly 185 pounds, with black hair and brown eyes. Investigators raised concerns he may have left the country with Ellisya and possibly traveled to Indonesia, which broadened the search across jurisdictions and continents.

The Philadelphia Police Department and the FBI have been involved and the National Center for Missing & Exploited Children has issued age-progressed images over time. The case remains open; anyone with information about Ellisya or her whereabouts in 2008 or afterward is asked to come forward.