JACKSON, Miss. -- Officials in east Mississippi operate a "school-to-prison pipeline" that incarcerates students for disciplinary infractions as minor as dress code violations with a policy that affects mostly black and disabled children, the U.S. Justice Department said Friday.

The Justice Department said police in the city of Meridian routinely arrest public school students without determining if there's probable cause when the school wants to press charges for a violation. Federal authorities say the students are then denied due process in youth court and on probation. The Justice Department did not outline specific allegations of wrongdoing against the school district in a letter to state and local authorities. Instead, it appears from the letter that the problems begin once a student is arrested.