WASHINGTON (AFP) - US authorities prepared to take custody of top al-Qaeda lieutenant Ramzi bin al-Shaiba, a suspected planner of the September 11 attacks who was captured last week in a raid in Pakistan. Bin al-Shaiba, one of the world's most hunted men, was arrested in Karachi on Wednesday by Pakistani security forces accompanied by US FBI agents and detained in a raid in which at least two people were killed and several others were arrested, the sources said. Another suspected top al-Qaeda figure seized in Karachi was expected to be handed over to the Federal Bureau of Investigation...