The threats that led to the U.S. closing almost two dozen embassies abroad this weekend is based on intelligence that is reminiscent of the "chatter" preceding the Sept. 11, 2001 terrorist attacks, a top senator on intelligence matters said Sunday. 

"The one thing we can talk about is the fact that there's been an awful lot of chatter out there," Sen. Saxby Chambliss, R-Ga., the ranking member of the Senate Intelligence Committee said Sunday on NBC's "Meet the Press." He said the chatter is "very reminiscent of what we saw pre-9/11."