LOUISVILLE, KY (WAVE) – An undercover operation by Louisville Metro police resulted in at least four arrests of men accused of promoting human trafficking over Derby weekend, according to newsgathering partner WAVE3 News.

Arrest reports for three of the suspects — Mohith Akula, 27, of Santa Clara, California; Jackson Jones, 54, of Radcliff, Kentucky and Ronnie R. Johnson, 34, of Clarksville, Indiana — say the men responded to an online ad and contacted an undercover officer who was posing as a minor.

Each man arranged to engage in sex acts with a 15-year-old girl in exchange for money or drugs. They were arrested after arriving at the meet site, a motel in eastern Louisville Metro.

The arrest report of a fourth suspect, Deontae Montez James, 27, of Shelbyville, was not immediately available.

In addition to promoting human trafficking, all four suspects are charged with using electronic communications to procure a minor for sex. James is charged with possession of marijuana.