Cautious university officials summoned the experts Monday, taking extra precautions after a student was accused of gunning down 12 people at a movie theater and rigging his apartment with explosives.
Officials say one package was slipped under the door of a professor, who didn’t recognize the sender. The other was in the campus mail system.
A robot was used to examine one. Officials haven’t said what either contained. They say there is no evidence either was connected to James Holmes, who had enrolled in a Ph.D. program but was withdrawing.
Investigators say some of the materials Holmes used in the attack early Friday were delivered to him at the university.
(Copyright 2012 by The Associated Press. All Rights Reserved.)