BAGHDAD , Iraq ( CNN ) -- Attackers launched assaults across Iraq over the past 24 hours , killing 11 police recruits and six civilians , including a 7-year-old . Iraqi and U.S. troops conduct a joint patrol Monday in the northern city of Mosul during a push against insurgents . Also , the U.S. military said it killed an al Qaeda in Iraq leader in northern Iraq . The violence erupted as a peace agreement was taking hold in Baghdad 's Sadr City , for weeks the scene of battles between Iraqi security forces and Shiite militias . A suicide bomber exploded his vest outside the house of an Awakening Council leader , Sheikh Mutleb al-Nadawi , about 50 miles ( 80 kilometers ) east of Baquba in Diyala province , the military command in Diyala said . Al-Nadawi was in the house and escaped injury , but a 7-year-old was killed and two of al-Nadawi 's bodyguards were wounded . Awakening Councils are the U.S.-backed Sunni groups that oppose al Qaeda in Iraq . A mortar round landed on a busy outdoor market in Balad Ruz , about 25 miles ( 40 kilometers ) east of Baquba . Three civilians were killed , and nine were wounded . A bomb exploded Tuesday inside a minibus in southeastern Baghdad 's Rustumiya district , killing two passengers and wounding five , an Iraqi Interior Ministry official said . Insurgents also attacked a minibus filled with police recruits Monday in Baaj , a Nineveh province town near the Syrian border , killing 11 people , according to Mosul police . Iraqi security forces arrested 15 people in connection with the attack . Backed by U.S. soldiers , Iraqi forces have been conducting an offensive against al Qaeda in Iraq in Mosul and the rest of Nineveh province . American-led coalition troops killed a senior al Qaeda in Iraq leader east of Samarra in northern Iraq on Tuesday , the U.S. military said . Meanwhile , the agreement forged to end the weeks of fighting in the capital 's Sadr City is taking hold , government officials and witnesses said . Thousands of soldiers and police officers have moved deep inside the restive neighborhood without resistance from Shiite militia members who have been fighting Iraqi and U.S. troops . The troops have been clearing mines and soon will begin the process of confiscating weapons , officials said . No violence has been reported in the area since Monday . Much of the earlier fighting involved the Mehdi Army militia of Shiite cleric Muqtada al-Sadr and security forces dominated by a rival political party , the Islamic Supreme Council of Iraq . The latter is the leading party in the government 's United Iraqi Alliance bloc . The agreement , hammered out between the United Iraqi Alliance and the Sadrists , is intended to clear the neighborhood of weaponry and outlaws and restore stability to the area . Tahseen al-Sheikhly , civilian spokesman for Baghdad 's security plan , said there has been great cooperation among residents , Sadrist supporters and government forces . Gen. Qassim Atta , the military spokesman of Baghdad 's security plan , said Tuesday that checkpoints and patrols have been established and coalition forces are ready to help Iraqi troops , but they have not entered Sadr City . Elsewhere in Baghdad , the trial of Saddam Hussein-era officials Tariq Aziz , Ali Hassan al-Majeed -- also known as Chemical Ali -- and six others resumed Tuesday . They are facing charges in connection with the executions of 42 Iraqi merchants in 1992 . CNN 's Mohammed Tawfeeq contributed to this report .
Attack on Awakening Council leader leaves 7-year - old dead . Al Qaeda in Iraq leader is killed , Iraqi military says . Minibuses crash in Baghdad , Nineveh province . Trial of Saddam Hussein - era judge resumes .