The victims were forced to come to the Valley to work as escorts in order to pay off debts in Thailand. They provided sexual services for money at two locations in Tempe from November 2015 to May 2016, according to prosecutors.
In May, the Tempe Police Department, Arizona Department of Public Safety and U.S. Immigration and Customs Enforcement's Homeland Security Investigations investigated and shut down the sex trafficking ring.
"It is our intent to protect the innocent, rescue the victims, and focus the full investigative and enforcement efforts of our agency against these perpetrators," AZDPS Assistant Director Lt. Col. Ken Hunter said.
Erik Christopher Dunham of Chandler was also arrested in connection with the case.
According to investigators, Dunham admitted to “co-managing” the prostitution ring with Koibuchi, and splitting the profits 50-50. He said Koibuchi had the contacts in Thailand to supply the girls while he was the business manager, and he made about $3,000 a week from the operation.
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