<snip>...
Yazid Sufaat, a US-trained chemist alleged to have hosted at least one al-Qaeda activist associated with the September 11 attacks during a visit to Kuala Lumpur, was ordered by Hambali to procure four tonnes of ammonium nitrate. He allegedly made the order through his company, Green Laboratory Medicine, and arranged for it to be stored at Muar, a quaint port town on Malaysia's west coast, according to Malaysian officials. However, Mr Yazid's lawyer, Saiful Izham Ramli denies the Singaporean allegations. "My client has nothing to do with al-Qaeda or any militant group. He was not involved at any level whatsoever in the September 11 attacks or any militant activities," he said.
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Also if you remember, one of the very first aerial bombing targets in Afghanistan was a UN building the Taliban had occupied that contained an anthrax laboratory. The lab was for studying anthrax in the region but the equipment was all there to make it. So a bomb 'accidentally' landed on the equipment in the warehouse.
http://members.bellatlantic.net/~vze43v8m/