Self-proclaimed September 11 mastermind Khalid Sheikh Mohammed and four other Guantanamo Bay detainees will be sent to New York to face trial in a civilian federal court, an Obama Administration official said early today. 
 
Bringing such notorious suspects to US soil to face trial is a key step in
         President Barack Obama's plan to close the terror suspect detention centre in Cuba. 
 
The trial may also force the court system to confront a host of difficult legal issues surrounding counterterrorism programmes begun after the 2001 attacks, including harsh interrogation techniques. 
 
The most severe method - waterboarding, or simulated drowning - was used on Mohammed 183 times in 2003, before the practice was banned.