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EL RENO, Okla. – Authorities arrested a former Oklahoma police officer after he allegedly drove to Canadian County to have sex with a 14-year-old girl.

Investigators with the Canadian County Sheriff’s Office began an investigation on April 1 after responding to an online ad seeking someone who wants to “party and play.” Officers say “party and play” is commonly used to describe having sex while under the influence of methamphetamine.

A deputy responded to the ad, claiming to be a 14-year-old girl, and got in contact with 36-year-old Derrick Kearnes.

Kearnes asked the teen how she liked to use meth and described how great sex would be while high on meth.

“We were especially concerned about this predator because how aggressively he was working to get a 14-year-old to get high on meth and then rape her,” said Undersheriff Chris West, with the Canadian County Sheriff’s Office.

When Kearnes attempted to meet the teen, he was immediately taken into custody.

“People hear about sex trafficking all the time, and this is just one example of how our precious children get dragged into a life of drug addiction and prostitution,” West said.

Kearnes was arrested on charges of soliciting sex with a minor by use of technology and possession of methamphetamine with intent to distribute.

As it turns out, Kearnes used to work as a police officer in Blanchard.

“We have contacted the Oklahoma Council for Law Enforcement Education and Training (CLEET) about Kearnes’ arrest, and will be taking all the steps necessary to make sure he never works as a police officer again,” West said.