Undercover inspectors have discovered that a building registered as a church was being operated as a sex club.

The sex club church is located in Nashville, the capital of the U.S. state of Tennessee.

WTVF-TV reports that the city of Nashville has filed a complaint against the owners for “maintaining a public nuisance by permitting acts of lewd conduct” and violating a state law banning sex clubs from operating within 1,000 feet of a school.

The longtime downtown swingers club underwent a conversion in 2015 when it relocated to a run-down office park in the community of Madison, calling itself a church because the new location is near the back of the private Goodpasture Christian School.

This April 23, 2015 photo shows a facility purchased by The Social Club, a Nashville, Tenn. swingers club, in a small office park in Nashville. The owners of the club are calling the new facility a church in order to win city approval so it can open next to a Christian school. The building is geographically isolated at the end of a dead-end street, but it is near the back of Goodpasture Christian School, a large private school serving pre-school through high school children. (AP Photo/Mark Humphrey)

Two codes inspectors paid $40 to enter the facility in March and filed affidavits detailing sex acts they witnessed within.

The city is seeking to close the club.