Pakistani president Musharraf allegedly said today that Omar Sheikh was an MI6 (British intelligence services) agent. The article covering Musharraf's statement says "At some point, he probably became a rogue or double agent."

This is interesting, because Mr. Sheikh is claimed to be one of the masterminds, trainers and/or funders of 9/11.

Did Mr. Sheikh in fact become a rogue or double agent? Or was he still working for MI6 when he played his role in the 9/11 attacks?