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

Joshua Anderson was sentenced to 18-to-20 years in prison after he pleaded guilty to two counts and one second degree count of sexual abuse of a minor.

That sentence will be served concurrently, or at the same time, with a 10 year federal prison sentence that he is currently serving for possession of child pornography.

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 was sentenced in the child porn possession case in March 2014.