"I cannot say exactly what happened but my assessment ...Was it is quite possible that they (the ISI) did not know but it was more probable that they did. And the idea was that at the right time, his location would be revealed," Lieutenant General (retd) Asad Durrani told Al Jazeera.
Durrani said he doubted the official line given by Inter-Services Intelligence (ISI) that it was unaware of the al-Qaeda leader's whereabouts until his death, implying that Pakistan would only have exchanged knowledge of his location in a quid-pro-quo deal.
Durrani, who served as director general of the ISI from 1990 to 1992, emphasised that he had no specific knowledge of the issue but suggested that Pakistan may have been harbouring bin Laden in the hope of getting a bigger say in the future of neighbouring Afghanistan.
"The quid pro quo to my mind...(was) you get your Osama Bin Laden, provided that, now let's agree, let's agree on how to bring the Afghan problem to an end," Durrani said.
Officially, the ISI maintains that it did not harbour bin Laden and played no part in the raid in 2011.
However, commentators have questioned how bin Laden could have eluded the intelligence agency in the years leading up to his discovery, given the location of the then al-Qaeda chief's compound in Abbottabad.
"The admission of incompetence was probably done on political reasons...As far as the people of Pakistan were concerned, it was going to be very uncomfortable for them that their government, you know, is in cahoots now with the United States and gets hold of Osama bin Laden," Durrani said, adding that bin Laden "was an admired figure in Pakistan".
