Baghdad , Iraq ( CNN ) -- Iraqi officials on Tuesday released security camera video of two weekend bombings that killed at least 155 people -- the deadliest attacks in the capital in more than two years . One video shows cars traveling around a traffic circle on Haifa Street in central Baghdad Sunday morning before a huge blast in front of the Justice Ministry . The impact shakes the camera and its view is obscured by clouds of smoke . Another camera shows the dozens of charred cars covered in debris from the other blast , as two fires burn nearby . Baghdad Gov . Salah Abdul Razzaq showed the videos at a news conference held under a blown-out ceiling at the second bombed building . He also announced that the Baghdad provincial council on Tuesday voted for the resignation of the interior minister and the Baghdad commander -- the two men in charge of Iraqi security forces in the capital . Razzaq said the attacks killed 155 people and wounded more than 500 . Other officials had put the death toll at 160 . The deaths include 20 children , two Interior Ministry officials said Tuesday . They said an earlier report that said 30 children packed on a minibus were among those killed was based on an erroneous police account . The Islamic State of Iraq , an umbrella group for al Qaeda in Iraq , claimed responsibility for the attacks in a statement released Tuesday . The authenticity of the claim could not be immediately verified , but it appeared on a Web site frequently used by the group . Iraqi Maj. Gen. Abdul Aziz said he believes al Qaeda in Iraqwas behind the attack . `` In my personal estimate or assessment , what I can tell you , I can see the imprint of al Qaeda , which is the enemy of Iraq and the enemy of all humanity , '' Aziz said through a translator Tuesday . The Islamic State of Iraq also claimed responsibility for nearly identical truck bombings that struck the Foreign and Finance ministries on August 19 , killing at least 100 and wounding hundreds more . One of the bombs Sunday exploded outside Baghdad 's governorate building , the other outside the Justice Ministry . The bombs detonated in quick succession about 10:30 a.m. , officials said . See photos from the deadly explosions . Plumes of smoke billowed from the sites as victims fled , some with blood streaming down their faces . The streets were strewed with debris , including charred cars and chunks of concrete . Other government buildings in the area were heavily damaged . The blasts sparked questions about Iraq 's security and national elections planned for January . Iraqi Prime Minister Nuri al-Maliki , who visited the scene shortly after the explosions , said holding the elections as scheduled would send a strong message to the attackers . `` The cowardly attack ... should not affect the determination of the Iraqi people from continuing their battle against the deposed regime and the gangs of criminal Baath party , and the terrorist al Qaeda organization , ' '' al-Maliki said in a written statement . U.S. President Barack Obama called the attacks an attempt to derail progress in Iraq , and pledged to work closely with the country as it prepares for elections . Obama spoke with the prime minister and President Jalal Talabani to express his condolences and reiterate U.S. support . The August attacks led to tightened security in Baghdad , including the addition of blast walls and security checkpoints . Two years earlier , three truck bombings killed hundreds in Qahtaniya , in northern Iraq . Sunday 's attacks were the deadliest on Iraqi civilians since those blasts in August 2007 . Iraqis are supposed to go to the polls in January , but passage of an election law is needed first . Late Monday , Iraqi leaders reached tentative agreement on a draft of such a law . U.S. and Iraqi government officials say the election is a vital step in Iraqi efforts to solidify a democratic system in the post-Saddam Hussein era . CNN 's Jomana Karadsheh , Mohammed Jamjoom , Saad Abedine and Mohammed Tawfeeq contributed to this report .
Two blasts in Baghdad over the weekend killed more than 150 people . One video view shows cars traveling around a traffic circle before a huge blast . The second one is from inside an office building, with smoke and debris falling on it. Sunday 's attacks were the deadliest on Iraqi civilians since August 2007 .