"The terrorist groups supported by foreigners have misused the political vacuum and the delay in the formation of the (Iraqi) government to start a new round of destructive measures to pressure the government and gain more political concessions," Foreign Ministry Spokesman Ramin Mehman-Parast said in a statement on Tuesday.
On Sunday, a group of armed men took more than 100 worshippers at the church hostage for nearly four hours, and killed at least 52 people and injured over 60 others.
"Experience has shown that whenever Iraqi politicians come close to practical and logical mechanisms for the formation of a national unity government, the terrorist groups as a tool in the hand of the internal and regional streams have made attempts to foil those measures," Mehman-Parast added.
He also urged Iraqi authorities and lawmakers to form the new government as soon as possible in an effort to prevent the meddling of occupiers in the political processes of their country and defuse the plots hatched by the enemies to create pessimism and distrust in the government.
Iraq has been the scene of almost daily attacks over the past weeks, resulting in the death and injury of many civilians and security forces.
In the latest such incidents, more than 100 people were killed in over 20 coordinated bomb attacks in and around the Iraqi capital, Baghdad, on Tuesday.
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