U.S. Defense Secretary Leon Panetta has admitted he believes some people within the Pakistani government knew Osama bin Laden was hiding in the Pakistani city of Abbottabad. Panetta has also confirmed the CIA used a Pakistani doctor to help establish bin Laden’s whereabouts. The doctor, Shakil Afridi, set up a fake vaccination campaign in the city in an effort to get DNA from the bin Laden family. He is now being held in Pakistani custody.