EL RENO — The Canadian County sheriff's office and prosecutors are at odds for the first time over the sheriff's longtime sex sting operation where a deputy poses online as an underage girl.

Undersheriff Chris West spoke to reporters Tuesday, criticizing a plea agreement offered by prosecutors to an Oklahoma City man accused of soliciting sex from an undercover sheriff's lieutenant posing as a 14-year-old girl. The defendant, Adam William McMillen, wouldn't have to register as a sex offender if he accepts the plea deal.

Prosecutors, who have advocated lengthy prison sentences for dozens of others caught in the sting, defended their decision Tuesday.

McMillen, 37, was arrested July 30 after he allegedly sent sexually illicit messages to the undercover lieutenant and then attempted to meet the fictitious minor in Oklahoma City.