The State Patrol says 45-year-old William J. Buckner, of Clifton Springs, N.Y., was booked into the Garden County jail Thursday on charges of kidnapping, sexual assault and transporting a minor across state lines.
Witnesses reported seeing a man place the girl in the semitrailer, then drive away.
The State Patrol says he was taken into custody after returning to the center with the girl.
It was not clear if Buckner had an attorney. A spokeswoman for the patrol did not return a call Thursday night.