The ACLU says the federal government has refused to turn over public records regarding the alleged abuse of migrant children while they were in the care of immigration authorities.
The organization sought the records through the Freedom of Information Act in December after filing a complaint last summer alleging more than 100 minors were abused or mistreated by Border Patrol agents while in custody.
Thousands of children were in the care of the Border Patrol after an unprecedented surge in unaccompanied minors who crossed into Texas illegally. Many children were sent to Nogales, Arizona, where they were held in a large warehouse while their cases were processed.
Many of the children were from Central American countries and said they were fleeing extreme violence and poverty.
Copyright 2015 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.