Police try to trace steps of suspect in NYC attack

WASHINGTON — Police are checking 6,000 security cameras in an effort to trace the suspect’s steps after an explosion in a crowded subway corridor near the Port Authority Bus Terminal Monday morning. The explosion left at least five people injured.
CBS News homeland security correspondent Jeff Pegues has been working his sources to find out more about 27-year-old Akayed Ullah.
Within hours of the explosion, heavily armed police swarmed the suspect’s apartment