The U.S. Department of Justice has accused officials in Lauderdale County, Mississippi of running ‘a school-to-prison’ pipeline that jails juveniles for even minor school disciplinary problems.

A letter sent by the civil rights division on Friday charges that the Lauderdale County Youth Court, the Meridian Police Department, and the Mississippi Division of Youth Services have been violating the constitutional rights of children in Lauderdale County and the City of Meridian.

According to the letter, an investigation launched last December revealed that “the agencies have helped to operate a school-to-prison pipeline whereby children arrested in local schools become entangled in a cycle of incarceration without substantive and procedural protections required by the U.S. Constitution.