FBI agents raided a federal women’s prison in California this week so plagued by sexual abuse that it was known among inmates and workers as the “rape club.”

The action coincided with the ouster of the new warden from the federal correctional institution in Dublin. Warden Art Dulgov — just a few months into his tenure — and three other top managers were removed from their positions Monday by the federal Bureau of Prisons. Dulgov was the third new leader of the low-security prison since Warden Ray T. Garcia, who, along with more than half a dozen employees, was convicted of sexually assaulting multiple women serving time there.

Dulgov and staff are accused of retaliating against an inmate who testified in January in a class-action lawsuit that alleges “horrific abuse and exploitation” at the prison, with rampant sexual assault of incarcerated persons, according to a court filing.