The Trump administration threatened legal action against California on Thursday after an investigation found an “unbroken pattern” of sexual misconduct by employees at two state women’s prisons.

In a letter to Gov. Gavin Newsom (D-CA), Assistant Attorney General for Civil Rights Harmeet Dhillon at the Justice Department said investigators had reasonable cause to believe the California Department of Corrections and Rehabilitation violated prisoners’ Eighth and 14th Amendment rights under the Constitution.