Russian Prosecutors Confirm Ex-Guantanamo Prisoner Arrest - MOSNEWS.COM

Kudayev was imprisoned at Guantanamo Bay after being captured in Afghanistan and linked to the Islamic Movement of Uzbekistan, a terror group with alleged ties to al-Qaida.

Apparently the US released Kudayev, rather than return him to Uzbekistan. He is accused of participation in the recent Nalchik attack on October 13th.