This sounds somewhat far-fetched to me. I just don't see how it would be possible that he was providing nuclear material and biological agents. Also, the stuff talked about in that sify news site seems like science fiction, as its name suggests. And if there truely is such a report then perhaps it is from an unreliable source or the documents have been forged by the Pakistan government. And when thinking of the Contra Affair and other such things, when that was going on we were not supplying materials to people whom with we were at war. Al-Qaeda, however, is a group that the United States is currently and actively at war against, and so it would make no sense for us to be supplying such devistatingly powerful and destructive materials to our enemy. As for Task Force 373, it too is a specialized group of coalition forces, mostly from the U.S., to take down top terrorist leaders, especially in the Taliban, which gives them no reason to supply their enemy either.