] Khalid admitted he was in contact with Osama Bin Laden as
] late as this year, but insisted he was unaware of his
] whereabouts
...
]
] The contacts were made through messengers.
]
] He and Bin Laden had communicated through a complex chain
] of messengers, involving a combination of e-mail and
] couriers
. . .
]
] Some of those messages were in the form of handwritten
] letters from Bin Laden, found in the room where Sheikh
] Mohammed was sleeping when he was nabbed in a pre-dawn
] raid Saturday.

Bin Laden Communicated via Handwritten Letters