Terror Case Called One of Most Serious in Years

By DAVID JOHNSTON and SCOTT SHANE
NYT

WASHINGTON — Since the terrorist attacks of Sept. 11, 2001, senior government officials have announced dozens of terrorism cases that on closer examination seemed to diminish as legitimate threats. The accumulating evidence against a Denver airport shuttle driver suggests he may be different, with some investigators calling his case the most serious in years.

Documents filed in Brooklyn against the driver, Najibullah Zazi, contend he bought chemicals needed to build a bomb — hydrogen peroxide, acetone and hydrochloric acid — and in doing so, Mr. Zazi took a critical step made by few other terrorism suspects.

If government allegations are to be believed, Mr. Zazi, a legal immigrant from Afghanistan, had carefully prepared for a terrorist attack. He attended a Qaeda training camp in Pakistan, received training in explosives and stored in his laptop computer nine pages of instructions for making bombs from the same kind of chemicals he had bought.

While many important facts remain unknown, those allegations alone would distinguish Mr. Zazi from nearly all the other defendants in United States terrorism cases in recent years. More often than not the earlier suspects emerged as angry young men, inflamed by the rhetoric of Osama bin Laden or his associates. Some were serious in intent. More than a few seemed to be malcontents without the organization, technical skills and financing to be much of a threat. In some cases, the subjects appeared to be influenced by informants or undercover agents who pledged to provide the weapons or even do some of the planning.

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Here's Wikipedia's explanation of TATP: http://en.wikipedia.org/wiki/Acetone_peroxide