Yemen's President Flees Rebel Advance: AP

As the advance of Shiite Houthi rebels plunged the Gulf nation further into crisis, five Yemeni officials told The Associated Press that Yemen's president fled his palace in Aden to an undisclosed location Wednesday. Witnesses also told the AP they saw a convoy of presidential vehicles leaving President Abed Rabbo Mansour Hadi's hilltop palace in Aden. However, Hadi's chief of national security denied to Reuters that the president had fled his home. The developments came just hours after Houthi rebels seized an air base formerly used by the U.S. and Europe in the fight against al Qaeda. Over the weekend the U.S. military evacuated its advisors and intelligence officials from Yemen as the situation became increasingly chaotic. A senior U.S. military official told NBC News at the time that Hadi was considering leaving Yemen with the Americans.