A Coalville man already convicted making videos of sex acts involving a teenage boy and girl has pleaded guilty to a third sex charge and faces sentencing Aug. 14, prosecutors said Monday.

Arvin Moore, 39, was charged with a total of nine pornography-related counts.

Last month, a 3rd District Court jury convicted him of two counts of distributing pornographic materials and single counts of sexual exploitation of a minor and dealing pornographic materials to a minor.

He first pleaded innocent in a related case involving a separate minor victim. But in a plea bargain last week, he changed his plea to guilty on one count of dealing in material harmful to a minor in exchange for prosecutors dropping four other counts.