<p>Captured this week in Pakistan, a nephew of a reputed al Qaeda mastermind may know the whereabouts of Osama bin Laden, sources said Thursday.</p>
<p>The suspect, Ali Abed al Aziz, is a nephew of Khalid Sheikh Mohammed, the alleged mastermind of the September 11 terrorist attacks, and a cousin of Ramzi Youssef, who was convicted in the 1993 bombing of the World Trade Center, the sources said.</p>