LONDON - A suspected Islamic militant accused of organizing a terror training camp in Oregon appeared in a British court today after the U.S. requested his extradition.

A judge ordered that Haroon Rashid Aswat, a 30-year-old British citizen, be held until Thursday, when the case will resume at a central London court.

Three of the four main suspects in the failed July 21 London bombings appeared also at a high-security court today, charged with attempting to murder passengers on London's transport system.

Muktar Said Ibrahim, 27, Ramzi Mohammed, 23, and Yassin Hassan Omar, 24, were ordered to remain in custody until Nov. 14 on charges of attempted murder, conspiracy to murder, possessing or making explosives and conspiracy to use explosives. They face life in prison if convicted.

The fourth main suspected attacker, known both as Osman Hussain and as Hamdi Issac, was arrested in Rome and is being held there on international terrorism charges. British authorities are seeking his extradition.

Aswat appeared at the Bow Street Magistrates Court in a special sitting near southeast London's high-security Belmarsh prison a day after he was deported from Zambia, where he was detained in connection with the London bombings.

He faces questions about 20 phone calls reportedly made on his South African cell phone to some of the bombers responsible for the July 7 suicide attacks that killed 56 people, including the four bombers.

But the extradition hearing was based on accusations he tried to set up a camp in Bly, Ore., in 1999-2000 to provide training in weapons, hand-to-hand combat and martial arts for people aiming to fight in Afghanistan.

Aswat's lawyer, Hossein Zahir, indicated his client would challenge the extradition.

"He wishes to stress that he has nothing to hide," Zahir told the court. "He denies any suggestion that he's a terrorist or engaged in any terrorist activity."

Prosecutor Hugo Keith, representing the U.S. authorities, said Aswat flew to New York on Nov. 26, 1999, before taking a bus to Seattle in order to help set up the camp in nearby Oregon.