Baghdad: The group's second-in-command, al-Baghdadi's deputy, is a former Saddam-era army major, Saud Mohsen Hassan, known by the pseudonyms Abu Mutazz and Abu Muslim al-Turkmani, according to the intelligence chief.

Hassan also goes by Fadel al-Hayali, a fake name he used before the fall of Saddam, the intelligence chief told The Associated Press. Like others, he spoke on condition of anonymity to discuss the intelligence.

During the 2000s, Hassan was imprisoned in the U.S.-run Bucca prison camp, the main detention center for members of the Sunni insurgency, where al-Baghdadi also was held.

The prison was a significant incubator for the Islamic State group, bringing militants like al-Baghdadi into contact with former Saddam officers, including members of special forces, the elite Republican Guard and the paramilitary force called Fedayeen.

The prison was a significant incubator for the Islamic State group, bringing militants like al-Baghdadi into contact with former Saddam officers, including members of special forces, the elite Republican Guard and the paramilitary force called Fedayeen.

In Bucca's Ward 6, al-Baghdadi gave sermons and Hassan emerged as an effective organizer, leading strikes by the prisoners to gain concessions from their American jailers, the intelligence chief said

Former Bucca prisoners are now throughout the IS leadership. Among them is Abu Alaa al-Afari, a veteran Iraqi militant who was once with al-Qaida and now serves as the head of IS's "Beit al-Mal," or treasury, according to a chart of

what is believed to be the group's hierarchy provided to the AP by the intelligence chief.

Al-Baghdadi has drawn these trusted comrades even closer after he was wounded in an airstrike earlier this year, the intelligence chief said.
IS top command dominated by Saddam army's ex-officers