Libya Attack Investigation

The State Department said Tuesday it never concluded that the consulate attack in Libya stemmed from protests over an American-made video ridiculing Islam, raising further questions about why the Obama administration used that explanation for more than a week after assailants killed the U.S. ambassador and three other Americans.

The State Department's top security official in Libya asked for extra security for the consulate in Benghazi in the months before the diplomatic post was overrun in a deadly attack but received no response from superiors, according to documents obtained by CNN.