A car bomb in the mainly Sunni Arab district of Adhamiya in Baghdad killed 15 people and wounded 30 on Tuesday (December 26), hospital sources said. The attack took place in front of the mosque of the Imam Abu Hanifa al-Nu'man. Adhamiya neighbourhood is a mainly Sunni area, a stronghold of former Iraqi president, Saddam Hussein supporters where insurgents have launched frequent attacks on US troops and Iraqi security forces. Earlier on Tuesday, there was a surge in violence in which three simultaneous car bombs exploded in a busy intersection in a predominantly Shi'ite district in southwestern Baghdad, killing at least 14 people and wounding scores, interior and police sources said. A roadside bomb in Baghdad's central Bab al-Sharji market killed five people and wounded 15. Three roadside bombs also exploded in quick succession in Sheikh Omar district, killing a police lieutenant colonel and wounding nine people, an Interior Ministry source said. Sunni insurgent groups including al Qaeda have launched bomb attacks against markets and other civilian targets in Shi'ite and mixed areas. Such attacks fuel reprisals assaults by Shi'ite militias against Sunni Arabs, deepening Iraq's sectarian cycle of violence.