Baghdad ( CNN ) -- Four people were killed and two were wounded when a so-called sticky bomb attached to a vehicle exploded Wednesday evening in the Ashhabi neighborhood of eastern Falluja , local police told CNN . The fatalities -- three Interior Ministry officials and a child -- included the director of the Falluja police intelligence department , the deputy police chief of the Garma police station , the police commissioner and a 7-year-old boy , police said . The wounded included a 5-year-old boy and a police official , police said . The children -- brothers -- were playing when the vehicle drove by carrying the four police officials , who had attended a funeral in eastern Falluja and were returning home when it detonated , police said . Iraqi security forces in Falluja were investigating the incident . The report of the blast came after bombings in three Iraqi cities over the previous day killed five people and wounded several others , police told CNN . In one , a colonel was driving from his home in Kirkuk to the town of Dibia , where he served as police commander . Dibia is about 12 miles north of Kirkuk , which is in the country 's north . There has been longstanding sectarian tension among Kurdish , Arab and Turkmen people in Kirkuk . The colonel was Kurdish , but there was no immediate information on whether the bombing was tied to ethnic hostilities . Over a two-hour period in and around the capital , Baghdad , on Wednesday , three attacks wounded several people , police said . Attackers shot and critically wounded a police colonel while he was driving near Shaab stadium in the east . Five people were wounded in a roadside bombing north of the city in Taji . And a police commissioner was wounded when a sticky bomb attached to his car exploded . On Tuesday night , three people were killed in Baghdad when a car bomb exploded on a commercial street in the southwestern Saydiya neighborhood . City police said 15 others were wounded . In Ramadi , more than 60 miles west of Baghdad , a roadside bomb exploded near an Iraqi police patrol , and one police officer died . Ramadi is in the predominantly Sunni Arab Anbar province , an area engulfed by violence during the height of the Iraq war . This came after a bloody Sunday , when 17 bombs exploded across Baghdad , killing at least 19 people and wounding more than 80 , Iraqi authorities said . The attacks were the latest in a spate in recent weeks that have raised concerns about Iraq 's ability to protect itself . Prime Minister Nuri al-Maliki said he plans to meet this month with Iraqi political leaders to discuss whether to ask that U.S. troops remain in Iraq beyond the January 1 , 2012 , withdrawal deadline . The United Nations office in Iraq has expressed concern about recent violence targeting government and security officials . Al-Maliki has said al Qaeda and other terrorists are behind the killings , but he also has blamed political movements and security guards , and he has promised to pursue the attackers .
NEW : This means the product will ship as received by the manufacturer, sealed, with all advertised components, and with the manufacturer warranty. Three bombings within two hours in Baghdad wound several , police say . A police officer in ethnically tense Kirkuk is killed Tuesday . Three people are slain in southwestern Baghdad Tuesday .