a noose was found in the library. >> a noose is a special symbol of horror for african-americans. it is not a joke. nothing about a prank about it. it strikes at the heart of african-american community and dignity. >> reporter: soon after word spread, captain tom morris says a female student came forward. >> apparently some of the students told her about the incident. she said that was me. that's not what i meant. she called our dispatch said i'm the one that did it. here's why. it had nothing to do with the activities of the past week. >> reporter: authorities say the student didn't connect the news to recent events on campus. hard to believe since the cries for change by the black student union and its supporters have been deafening. >> the students are afraid. they need to know what the chancellor is going to do to keep them safe on campus. >> reporter: university administrators say they're taking steps to calm the racial turmoil. even organizing a teach-in on wednesday to help improve the