The charges are enticement of a minor and production of child sexual abuse material, formerly called "child pornography."

Mesko, 50, was arrested by North Tonawanda police Feb. 4 on rape and criminal sexual act charges. According to the nine-page federal complaint, Mesko confessed to repeated sexual acts with the girl, who was described in the document as "intellectually disabled."

Investigators discovered conversations and nude images of the girl on computer tablets belonging to Mesko and the girl, the complaint said.

Mesko was freed from Niagara County Jail Feb. 10 after the District Attorney's Office decided not to hold a preliminary hearing. He is accused of taking the girl on the night of Feb. 15. Police found them the next morning in Barkeyville, Pa. Mesko is being held without bail in a Western New York jail, said Barbara Burns, spokeswoman for the U.S. Attorney's Office in Buffalo.