The video's authenticity could not be independently verified. The video and statement did not say when the men were abducted and when the killings took place.
Shiite cleric Sheik Mouwaffaq al-Husseini was killed in a Tuesday drive-by shooting by unknown gunmen in Baghdad's western Jihad neighborhood, police Captain Taleb Thamer said.
A senior police officer, speaking on condition of anonymity, said on Tuesday that two more Sunni clerics had been shot and their bodies found in Baghdad within a 24-hour period.
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