Torture and Secret Detention: Testimony of the "Disappeared" in the "War on Terror," Amnesty International, August 3, 2005 [report that two men currently held in a Yemeni prison seem to have been kept in clandestine US detention facilities in solitary confinement for almost two years]. Excerpt:

On 20 June 2005, Amnesty International delegates visited two Yemeni detainees said to have recently been transferred from the US detention facility at Guantánamo Bay in Cuba. However, their accounts described another US detention regime just as sinister, yet more secretive, than Guantánamo. The men appear to have been victims of the US administration's policy of secret detentions around the world. For over a year and a half they had effectively "disappeared".

Read the full text of the report here. Reported in JURIST's Paper Chase here.