A British man has pleaded guilty in federal court in New York to charges of trying to set up an al-Qaida terrorist training camp in rural Oregon.
Haroon Aswat faces up to 20 years in prison when he is sentenced at a later date.
He was arrested in Zambia in 2005 and sent to Britain on a separate arrest warrant. U.S. attorneys said he fought against extradition to the United States for 10 years.
U.S. Assistant Attorney General for National Security John Carlin said "[Aswat's] guilty plea is a testament to our determination to bring to justice all those who wish to harm the United States, whether at home or abroad, no matter how long it takes."
Aswat came to the U.S. from Britain in 2009. He and two co-defendants conspired to stockpile weapons and train other Muslims in acts of terrorism at a camp they planned to set up in Oregon.
A co-defendant in the plot, influential British cleric Abu Hamza, was sentenced to life in prison in January. He also was convicted of other terrorist acts including a deadly kidnapping in Yemen.
Another co-defendant, Ouassama Kassir, also was sentenced to life in prison in 2009.