LOUISVILLE, Ky. (WDRB) -- A former Oldham County music minister has pleaded guilty to a federal child sex charge.

The trial for 65-year-old Howard Key Chambers was due to start today, but was abruptly canceled after his decision to change his story and plead guilty to sex acts with a 10-year-old girl. 

This morning, Chambers admitted to enticing a child to a commercial sex act. The decision to plead guilty was part of a pre-arranged plea agreement. As part of the agreement, Chambers would spend 15-30 years in prison. 

The sentence will be finalized on July 5, which is the date set for his sentencing hearing.

Court records say the offenses happened between 2013 and August 2014. Authorities say the victim was violated at least six times, starting at the age of 10. Documents show Chambers paid $100 or more in some cases for the child to perform oral sex acts on him. 

Chambers admits he exchanged messages on craigslist.com under the subject "Granddaddy/babysitter fantasy 2."

Anna Sue Craigmyle attended Dehaven Baptist in La Grange, which was Chambers' church. 

"I'm at a loss, I really am, because I loved him dearly," she said after learning of the charges in October of 2014. "He was jut a fun guy to be around. I'm just...I'm sick. I really am."

Chambers is part of a larger case. One of the men -- former softball coach Christopher Kosicki -- sold children for sex on Craigslist. Kosicki is serving a 50-year prison sentence for sex trafficking and producing child pornography. The pleas agreement details how Kosicki directed the children on what to do sexually to the men, and in some instances, took pictures. 

WDRB has also learned of another suspect, Raymond Shadburn of Seymour, Indiana. Federal officials caught onto him first. They say he helped break the entire case and is now waiting for trial in Indianapolis.

There are 10 known victims. Some of the incidents happened in Kosicki's Louisville home. None of the victims came from Chambers' church.

Chambers lawyers raced from the courthouse without comment.

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