Tokyo police have arrested nine people for allegedly blackmailing customers of men’s beauty salons after baiting them with female staff offering sexual services.

Yuta Nagai and Hiroki Kanayama, both 32 and from Tokyo’s Chuo Ward, were among the arrested individuals. It was unclear when the arrests were made.

According to the Metropolitan Police Department, the nine individuals were arrested on charges for extorting about ¥2 million in cash from four male customers in their 20s to 40s between April and July.