BEIJING, March 2 (Xinhuanet) -- Multiple explosions hit Baghdad and Iraq's sacred city of Karbala Tuesday, killing dozens of people and injuring more than 100 others. The latest explosions have increased to nine the number of bomb attacks in Iraq in 2004.

    Following is a chronology of major bomb attacks in Iraq since May 1, 2003, when US President George W. Bush declared an end to major combats in Iraq:

    2003:

    May 1 -- Two grenades explode in a town west of Baghdad, wounding seven US soldiers.

    May 26 -- Four US soldiers are wounded when explosions rip through a US military convoy on a highway to the airport in the outskirts of Baghdad.

    June 3 -- A US soldier dies after attacked by unidentified men with small arms and rocket-propelled grenades in a town north of Baghdad.

    June 16 -- A car bomb explodes in a tunnel in central Baghdad, wounding four Iraqis.

    June 19 -- A mortar shell hits a coalition office in Iraq's central city of Samarra, killing one Iraqi and wounding 12 others.

    June 30 -- An explosion beside a mosque in Falluja kills nine Iraqis, including an imam.

    July 5 -- An explosion kills seven Iraqi policemen in Ramadi, 100 km west of Baghdad.

    Aug. 7 -- A truck bomb explodes outside the Jordanian Embassy compound in Baghdad, killing at least 17 people and wounding more than 60.

    Aug. 16 -- Six Iraqis are killed and 59 others injured in a mortar attack on the Abu Ghraib prison in the suburbs of Baghdad.

    Aug. 19 -- A truck bomb explosion devastates the UN headquarters in Baghdad, killing 22 people, including Sergio Vieira de Mello, the top UN envoy to Iraq.

    Aug. 29 -- A car bomb explodes, killing at least 83 people, including top Shiite Muslim leader Ayatollah Mohammed Baqer al-Hakim, and wounding 175, at the Imam Ali mosque in Najaf.

    Sept. 2 -- A car bomb rips through the Rasafa police headquarters in eastern Baghdad, killing one and wounding 15.

    Sept. 3 -- A suicide bombing kills an Iraqi and wounds two US soldiers in the town of Ramadi.

    Sept. 9 -- A car bomb kills one Iraqi and wounds 53, including six American military personnel, in Arbil, northern Iraq.

    Sept. 22 -- A suicide bomber and an Iraqi security guard are killed in an explosion near the UN headquarters in Baghdad, and atleast eight others are wounded.

    Sept. 24 -- A bomb explodes in Baghdad, killing an Iraqi and wounding about 20. A blast rips through a cinema in Mosul causing several casualties.

    Sept. 25 -- An explosion hits a hotel in central Baghdad, killing at least one employee of the hotel and injuring two others,including a foreign journalist.

    Oct. 1 -- A female US soldier is killed and three others are wounded in a bomb explosion near the US military base in Tikrit.

    Oct. 6 -- A bomb blast kills two US soldiers and an Iraqi interpreter in the south of Baghdad.

    Oct. 9 -- Two suicide bombers kill eight Iraqis at a police station in the Shiite Muslim district of Sadr City in the northeast of Baghdad.

    Oct. 12 -- At least six people are killed and 20 wounded in a blast outside the Baghdad Hotel in central Baghdad.

    Oct. 27 -- A series of bomb attacks kill at least 35 people andwound more than 230, near a Red Cross building and three police stations.

    Nov. 12 -- A car bomb kills at least 28 people including 19 Italians and nine Iraqis in Nassiriya.

    Nov. 22 -- Suicide bombers detonate car bombs outside the Baquba police headquarters and a police station in the nearby townof Khan Bani Saad, killing at least 18 people.

    Dec. 14 -- At least 17 people are killed and 33 others wounded when a car bomb rips through a police station in Khalidiyah in western Iraq.

    Dec. 27 -- About 19 people are killed and 120 others wounded when government buildings and foreign troops' bases in the southern city of Kerbala were attacked by suicide bombers, machineguns and mortars.

    Dec. 31 -- A car bomb kills eight and wounds more than 30 others in Baghdad.

    2004:

    Jan. 18 -- A suicide car bomber kills at least 25 people, mostly Iraqi civilians, at the entrance to the main US headquarters in Baghdad. More than 100 others are wounded.

    Jan. 31 -- Guerrillas kill nine in a car bomb blast outside a police station in Mosul. At least 44 are wounded.

    Feb. 1 -- At least 101 are killed and 133 wounded when two suicide bombers blew themselves up in Arbil at the offices of the two main Kurdish factions in northern Iraq.

    Feb. 10 -- Fifty-three people are killed and at least 75 wounded when a suicide car bomb rips through a police station in Iskandariya south of Baghdad.

    Feb. 11 -- A suicide car bomb explodes at an Iraqi army recruitment center in central Baghdad, leaving 47 dead and 52 wounded.

    Feb. 18 -- Suicide car bombers kill at least 11 Iraqis and wound 58 foreign soldiers and 44 Iraqis in twin attacks on a military base in Hilla.

    Feb. 23 -- Ten people are killed and at least 42 are wounded ina suicide bombing at a police station in the northern Iraqi city of Kirkuk.

    Feb. 26 -- One policeman is killed and five policemen and two civilians are wounded by a bomb exploding in Baqubah, a town 60 kmeast of Baghdad.

    March 2 -- Scores of people are killed by explosions in Iraq's sacred city of Karbala and Baghdad as Shi'ite Muslims are celebrating the Ashura ceremony, one of the holiest of the year. Enditem