WASHINGTON (AP) - Top U.S. law enforcement officials offered no explanation Tuesday for how the suspect in the failed Times Square bombing was allowed to board an international flight despite being hunted by the FBI and being placed on the federal no-fly list. At a news conference, Attorney General Eric Holder said the suspect, Faisal Shahzad, had admitted trying to set off a car bomb in crowded Times Square on Saturday. He will face terrorism and weapons of mass destruction charges, Holder said.