Former University of Texas professor Mario Villarreal was convicted of five counts of possession of child pornography.

More than 200 alleged offenders were arrested from April 28 to May 2 as part of the operation, which involved 55 FBI field offices, officials said.

This is one of the first defendants in Pennsylvania charged under a new statute banning artificially generated sexual images of a child, according to the district attorney's office.

Authorities executed a search warrant at a residence in St. Louis Park Tuesday morning. During the search, they say an adult man was arrested for possession of pornographic material involving minors.