A Yemeni man accused of recruiting Long Islander Bryant Neal Vinas into al-Qaida faces a minimum of 30 years in prison after pleading guilty to terrorism charges in federal court in Brooklyn on Tuesday.

Saddiq al-Abbadi, 40, pleaded guilty to conspiracy and weapons charges in addition to recruiting Vinas, of Patchogue, who discussed a bomb plot against the Long Island Rail Road before being captured and becoming a cooperating witness for the government.

Al-Abbadi was extradited to the United States in January from Saudi Arabia, where he had served time for an al-Qaida plot. He could get a sentence of up to life in prison when he is sentenced by U.S. District Judge Nicholas Garaufis. The sentencing has been scheduled for Sept. 25.

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Al-Abbadi said that in addition to providing personnel to al-Qaida by recruiting others, he waged war against American forces overseas.

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"I with others fought in Iraq from 2005 to 2009 against the United States of America with the intention to hurt, wound or kill these forces," he told Garaufis. "In 2008, I with others traveled from Afghanistan to Pakistan to fight and kill the U.S. forces stationed there."

Prosecutors said that he was the mastermind of a 2008 plan to lure U.S. forces to a compound in Afghanistan that had been booby-trapped with explosives and blow them up. A massacre was barely avoided when a soldier noticed wiring that was part of the detonation system.

"The defendant was a high-level al-Qaida operative with ties to the terrorist group's senior leadership," said acting U.S. Attorney Kelly Currie. "He fought in battles against U.S. troops in Iraq and Afghanistan . . . and helped an American citizen gain entry to al-Qaida."

Al-Abbadi and co-defendant Ali Alvi allegedly met Vinas at a safe house in Pakistan in 2007, where he was looking to link up with a group that would give him combat training. They befriended him, and introduced him to a Pakistani al-Qaida group.

Charges of conspiring to kill Americans and provide material support to al-Qaida are still pending against Alvi. Vinas is expected to be a witness at his trial.