Page last updated at 20:59 GMT, Tuesday, 13 May 2008 21:59 UK

Why has the US dropped 9/11 charges?

By Adam Brookes
BBC News, Washington

Mohammed al-Qahtani during a hearing in Yemen, 22 February 2006
Mohammad al-Qahtani was a suspect in the first capital case at Guantanamo
The American government has given no reason why charges against the man it has alleged was the "20th hijacker" in the 11 September 2001 attacks on the US have been dropped.

Mohammad al-Qahtani has been held at Guantanamo Bay since 2002, following his detention in Afghanistan.

In February, he was charged with conspiracy, terrorism, and murder in violation of the laws of war, among other offences.

The US alleges he attempted to come to the United States in order to take part in the 9/11 attacks, but was stopped at the airport on his arrival.

An immigration officer suspected he intended to stay in the US illegally, and refused him entry.

The charges were dropped "without prejudice" - which means they could be brought again at a later date.

Five other men were charged alongside Mr Qahtani.

They include Khaled Sheikh Mohammed - the man accused of organising the 9/11 attacks.

Their trials before military commissions - the special military courts in Guantanamo Bay - are sheduled to go ahead.

Torture claims

As well as his military lawyer, Mr Qahtani is represented by a civilian lawyer from the Center for Constitutional Rights - a New York-based legal rights organisation.

The CCR said in a statement it believed the charges against him had been dropped because Mr Qahtani had been tortured.

"The government's claims against our client were based on unreliable evidence obtained through torture at Guantanamo," it said.

US flag behind barbed wire at Guantanamo Bay, October 2007
The Guantanamo prison camp was set up soon after the Afghanistan invasion

"Using torture to string together a web of so-called evidence is illegal, immoral and cannot be the basis for a fair trial."

Published reports in 2006 described Mr Qahtani's interrogation.

The reports - based on leaks from the Pentagon - said he had been subjected to stress positions, sleep deprivation, extreme temperatures, humiliation and other highly coercive practices.

Some lawyers believe military officers did not want to face a discussion of these interrogation techniques in court, nor to have their case collapse publicly because the evidence obtained using such techniques might be ruled inadmissible.

Controversial commissions

However, proceedings against the five other suspects, including Khaled Sheikh Mohammed, appear to be going ahead.

It has been frequently reported, and is widely believed by civilian and military lawyers, that similar interrogation techniques were used in these cases, too.

So how are they able to go ahead, if the case against Mr Qahtani is dropped?

Lawyers suggest that in those cases there may be other evidence - obtained independently, and not tainted with the threat of inadmissibility.

One lawyer who is not directly involved with the Guantanamo detainees called the failure of the case against Mr Qahtani a "huge setback" for the US government and the entire legal process at Guantanamo Bay.

"Yet again, we don't know what is really happening in this system," he said. "Transparency is zero."

The military commissions process remains extremely controversial.

A case before the Supreme Court - Boumediene vs Bush - challenges its very legality under the constitution. The Court is expected to rule in the next two months.

Key 9/11 suspect charges dropped
13 May 08 |  Americas
Profile: Key 9/11 suspects
13 May 08 |  Americas
Fair trial pledge to 9/11 accused
12 Feb 08 |  Americas
9/11 charges mark major milestone
11 Feb 08 |  Americas
US charges six suspects over 9/11
11 Feb 08 |  Americas
'Al-Qaeda video' of 20th hijacker
21 Jun 06 |  Middle East

Has China's housing bubble burst?
How the world's oldest clove tree defied an empire
Why Royal Ballet principal Sergei Polunin quit


Sign in

BBC navigation

Copyright © 2017 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.

Americas Africa Europe Middle East South Asia Asia Pacific