A nurse who worked at an Immigration and Customs Enforcement detention center in Irwin County, Georgia and four lawyers representing clients there are claiming that immigrant women are routinely being sent to a gynecologist who has left them bruised and performed unnecessary procedures, including hysterectomies.

The doctor, who three lawyers identified as Dr. Mahendra Amin, practicing in Douglas, Georgia, has continued to see women from the Irwin County Detention Center for the past several years despite complaints from his patients.

Amin was the subject of a Justice Department investigation in 2015 for making false claims to Medicaid and Medicare. As a result, he and other doctors involved paid $525,000 in a civil settlement, according to the Justice Department.

The lawyers identified the doctor after a whistleblower complaint to the Inspector General for the Department of Homeland Security was filed by Dawn Wooten, who worked as a nurse inside the facility.