There's more:

No European or American intelligence expert contacted last week had heard of al-Libbi until a Pakistani intelligence report last year claimed he had taken over as head of operations after Khalid Shaikh Mohammad’s arrest. A former close associate of Bin Laden now living in London laughed: “What I remember of him is he used to make the coffee and do the photocopying.”

Some believe al-Libbi’s significance has been cynically hyped by two countries that want to distract attention from their lack of progress in capturing Bin Laden, who has now been on the run for almost four years.

Even a senior FBI official admitted that al-Libbi’s “influence and position have been overstated”. But this weekend the Pakistani government was sticking to the line that al-Libbi was the third most important person in the Al-Qaeda network.

Other international news agencies report that the interrogaton of al-Libbi is not going well--despite being administered a "truth serum" and being subjected to "phyiscal pressure."

officials said al-Libbi, believed to be Al Qaeda’s number three, has defied efforts to make him reveal valuable information about its senior hierarchy, despite coming under “physical pressure” to do so.

This isn't the first case of alleged mistaken identity. The Independent published this account of a case involving Omar Deghayes who claims he was tortured, blinded and more at Guantanamo because American and Pakistani interrogators mistook him for someone else. There's also Khaled el-Masri, the German shoe salesman and "ghost detainee" that Secretary of State Condoleeza Rice ordered released.