What Was Terror Suspect Up To?

(CBS) U.S. officials are backing away from assertions that a man arrested last month in Chicago was plotting a 'dirty' bomb attack on the United States, CBS Correspondent Jim Stewart reports.

U.S. officials now admit they're not sure what American-born Abdullah al Muhajir's plans were when he returned to the U.S. last month. And any plot, including possibly exploding a radiation bomb in Washington D.C., was in the "initial planning stages." But given what he'd trained for in Afghanistan, they expected the worst.