What happened at CU Boulder? Unconfirmed bomb threat leads to library evacuations

University of Colorado Boulder Police investigated a bomb threat. Norlin Library, Ketchum Arts and Sciences, and Ramaley Biology were evacuated. K-9 units swept the buildings. No other buildings were affected. The evacuation order was lifted after about an hour. Classes resumed in Ketchum and Ramaley. Norlin Library remained closed for the day.