Christmas market crash comes after State Department travel alert
A U.S. law enforcement official told CBS News that there have been concerns throughout Europe that Christmas markets were going to be targets of terrorism. On Monday, a truck plowed through a Christmas market in Berlin killing 12 and injuring dozens more. However, is not yet clear if it was terror related. CBS News homeland security correspondent Jeff Pegues joins CBSN from Washington, D.C., with the latest.