BAGHDAD , Iraq ( CNN ) -- The U.S. military announced Wednesday that coalition forces recently killed al Qaeda in Iraq 's `` charismatic '' senior leader in northern Iraq . Abu Qaswarah was second only to Abu Ayyub al-Masri ( pictured ) in al Qaeda in Iraq leadership . Abu Qaswarah , also known as Abu Sara , was killed during an operation in Mosul on October 5 , the military said . The Moroccan native was second-in-command to al Qaeda in Iraq ( AQI ) leader Abu Ayyub al-Masri , according to the military . He had `` historic ties '' to al-Masri 's predecessor , Abu Musab al-Zarqawi , and senior al Qaeda leaders in Afghanistan and Pakistan , the military said . Abu Qaswarah -- who became AQI 's senior leader in northern Iraq in June 2007 -- was the target of the military raid in Mosul earlier this month , the military said . Coalition forces tracked him down inside a building in the northern Iraqi city of Mosul , which `` served as a key command and control location for AQI , '' according to the military . `` Upon entering the building , forces were immediately fired upon , '' the military said . `` Coalition forces returned fire in self-defense , leading to the death of five terrorists . It was later determined that one of the five was positively identified as Abu Qaswarah . '' The U.S. military described Abu Qaswarah as a `` charismatic '' leader who rallied al Qaeda in Iraq 's northern network after `` major setbacks to the terrorist organization across Iraq . '' Groups comprised mainly of former Sunni insurgents -- known as Awakening Councils or `` Sons of Iraq '' -- have turned against al Qaeda in Iraq , helping to diminish its presence in several parts of the country . The U.S. military credits them with playing a key role in bringing about the nationwide drop in violence that coincided with the `` surge '' of U.S. forces . Abu Qaswarah -- who trained with al Qaeda in Afghanistan -- helped bring foreign terrorists into northern Iraq , where they carried out a spate of suicide attacks , according to the military . He also organized and led AQI 's attacks in Mosul , including the `` failed attempt to destroy the Mosul Civic Center during the holy month of Ramadan , '' which took place in September , the military said . That attack , the military said , `` could have killed hundreds of innocent Iraqis . '' The military said Abu Qaswarah 's death `` will significantly degrade AQI operations in Mosul and northern Iraq , leaving the network without a leader to oversee and coordinate its operations in the region . ''
Abu Ayyub al-Masri killed during an operation in U.S. on October 5 . He was second -in-command to al Qaeda in Mosul leader Abu Ayyub al-Masri . Coalition forces tracked him down inside a building in the northern Sunni city . U.S. military described Abu Qaswarah as a `` charismatic '' leader .