A Fort Pierce man has admitted to exchanging sexually explicit images with a 15-year-old Iowa girl and her 6-year-old sister.
Robert Harden, 21, pleaded guilty to production of child pornography Monday. He was arrested in October.
According to the federal indictment, authorities found files on Harden's laptop computer containing Internet chat messages between Harden and the teen girl. Authorities said the computer's contents also showed that Harden had repeatedly requested and received sexually explicit pictures and videos from the sisters.
Harden faces up to 35 years in federal prison.