Federal authorities are releasing fourth-grader Elizabeth Zuna, the first of several students detained by immigration officers in the Minneapolis suburb of Columbia Heights, the school district's superintendent said late Tuesday. Elizabeth and her mother were "picked up by ICE on their way to school" on Jan. 6 and were being held at the Dilley Immigration Processing Center, Zena Stenvik said in a statement. Dilley is a town in extreme southeast Texas. It wasn't clear when they would come back