BOISE, Idaho (AP) — The ACLU of Idaho says Corrections Corporation of America appears to be violating a settlement reached in a lawsuit over violence at an Idaho prison. The ACLU sued CCA in 2010 on behalf of inmates at the Idaho Correctional Center south of Boise, contending that the prison was so violent inmates called it "Gladiator School." CCA firmly denied the allegations, and both sides reached a settlement requiring staffing and safety changes at the prison. ACLU-Idaho executive director Monica Hopkins says the organization sent CCA attorneys a letter last week contending the settlement isn't being followed. CCA spokesman Steve Owen says the company continues to work in good faith to reach an amicable resolution through the settlement process. He says CCA's focus is on operating a safe, high-quality facility.