Two car bomb blasts near the Shi'ite shrine city of Karbala in southern Iraq have killed at least 20 people and wounded more than 50 others.

Iraqi officials say the attacks targeted Shi'ite pilgrims heading to Karbala for an important Sh'ite holiday this week.

Earlier Monday, another car bomb exploded in front of the Baghdad offices of Al-Arabiya television, killing at least four people and wounding 16 others.  Al-Arabiya staffers said the explosion badly damaged the building and left a huge crater.  Iraqi officials had previously warned the network about the threat of an insurgent attack.

Monday's bombing was not the first time Al-Arabiya has been targeted in Iraq.  The network's Baghdad bureau chief escaped harm in 2008 after a bomb was found strapped to his car.  The Arabic-language station is owned by Saudi Arabia and based in Dubai.

Some information for this report was provided by AP, AFP and Reuters.

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