BAGHDAD , Iraq ( CNN ) -- At least four people were killed and 32 wounded as six Baghdad-area churches were bombed within 24 hours , officials told CNN . Family members of Rizko Aziz Nissan grieve before his funeral in Kirkuk , Iraq , on Sunday . The first bombing took place Saturday night at St. Joseph 's church in western Baghdad , according to an Interior Ministry official . Two bombs placed inside the church exploded at about 10 p.m. No one was in the church at the time of the attack . Sunday afternoon , three bombs exploded outside churches , wounding eight civilians , the official said . The bombs detonated within a 15-minute span , between 4:30 and 4:45 p.m. Two of the churches are in central Baghdad 's al-Karrada district , and the third is in al-Ghadeer in eastern Baghdad . Sunday evening , a car bomb exploded outside a church on Palestine Street in eastern Baghdad just after 7 p.m. , the official said . Four people died , and 21 were wounded . Watch how the bombings unfolded » . And in southern Baghdad 's Dora district , a bomb outside a church wounded three other civilians . Most of the churches were damaged in the bombings , according to video footage . One Christian Iraqi , interviewed outside Sacred Heart Church -- one of the two in al-Karrada -- said the bomb went off shortly before 5 p.m. , as members were arriving for Sunday evening mass . No one was hurt , Sabhan George told CNN , but the bomb damaged the church building and some cars outside . George said he is concerned about the church bombings . If this continues , he said , `` there will be no Christians left in Iraq . '' St. Joseph 's was one of six churches hit by coordinated bombings of Christian houses of worship in Baghdad and Mosul in 2004 . The church is in the al-Jamiaa neighborhood of Baghdad , a former stronghold of al Qaeda in Iraq . There have been recent reports of an increase in targeted attacks in the area . Many of Iraq 's estimated 1 million Christians have fled the country after targeted attacks by extremists . In October , more than a thousand Iraqi families fled the northern city of Mosul after they were reportedly frightened by a series of killings and threats by Muslim extremists , who apparently ordered them to convert to Islam or face possible death . At least 14 Christians were killed in Mosul in the first two weeks of October . Separately , gunmen shot and killed an official in the Iraqi city of Kirkuk on Sunday morning , a local police official told CNN . Using guns with silencers , the assailants opened fire on Rizko Aziz Nissan outside his home in central Kirkuk at 8:15 a.m. Nissan was an Iraqi Christian , but the motives behind his killing were not immediately clear . Kirkuk is 150 miles ( 240 kilometers ) north of Baghdad . CNN 's Youssif Bassil contributed to this report .
NEW : Four dead , 21 wounded in Baghdad church bombing Sunday evening . Bombing is one of six at Baghdad churches within 24 hours ; 11 injured at other sites . NEW : ` The attack on the Shiite holy city of Karbala was a suicide bombing, according to Iraqi police and hospital officials. Christian official in Kirkuk shot to death outside his home , police say .