What was thought to a child pornography bust, later turned out to be something more serious.

Twenty-one year old Joshua Anderson has pleaded not guilty to two counts of first degree sexual abuse of a minor, and four counts of second degree sexual abuse of a minor.

Undercover FBI agents say in August of 2013, they received child pornography from an IP address in Casper.

They traced it to Anderson who confessed to sharing, possessing and distributing the images and having sexual relations with three victims, all under the age of 13.

Investigators with the Casper Police Department later interviewed the victims who told them what Anderson had done to them.

Anderson is awaiting trial on $25,000 bond, and could face up to 50 years in prison on each of the first degree sexual abuse of a minor charges, and up to 20 years in prison on each of the second degree sexual abuse of a minor charges, if convicted.