Factbox: At least three men in line for Guantanamo trials

(Reuters) - The Obama administration said on Monday it had lifted its stay on the filing of new charges in the war crimes tribunals at the Guantanamo Bay U.S. Naval Base in Cuba.

Charges are expected to be filed soon against three prisoners the administration has already identified as eligible for trial. All three had previously been charged during the Bush administration but their cases were dropped in 2009 so the Obama administration could conduct a review of the Guantanamo detention policy. Here are details of the cases:

* Abd al-Rahim al Nashiri -- Saudi Arabian national of Yemeni descent, accused mastermind of the attack on the warship USS Cole in 2000. The attack by a small, explosives-laden boat in the Yemeni port of Aden killed 17 U.S. sailors and wounded 47. Nashiri is accused of being al Qaeda's operations chief for the Arabian Peninsula. The CIA has acknowledged using the simulated-drowning technique known as waterboarding on him and Polish prosecutors are investigating Nashiri's claims that he was tortured by interrogators at a secret CIA prison in Poland before he was moved to Guantanamo. He was captured in Dubai in 2002. The original charges under the Bush administration carried the death penalty.

* Ahmed al Darbi -- Saudi Arabian accused of buying a boat and global positioning devices and shopping for crewmen as part of an unrealized plot to ram an explosives-laden boat into an unidentified ship in the Strait of Hormuz. A lawyer familiar with the case said Darbi was given $50,000 to further the plot but spent it on prostitutes and drugs. Darbi has said he used his boat only to ferry sheep across the strait. Darbi is also accused of teaching at an al Qaeda camp in Afghanistan and meeting Osama bin Laden there. He was captured in Azerbaijan in 2002.

* Obaidullah -- Afghan who uses only one name. He is accused of working with al Qaeda in Afghanistan, hiding mines and other explosives at his residence and having a notebook that included instructions on how to use them. Obaidullah has said the mines belonged to a commander who lived in the house during the Soviet occupation, and that he only had the notes because the Taliban forced him to attend a bomb detection class. He was captured in Afghanistan in 2002.

(Reporting by Jane Sutton; Editing by Eric Beech)