Sheik Mustafa al-Bayati, member of the Iraqi Doctrine Council where senior Sunni scholars sit to issue religious edicts, says the decision was taken on Thursday and came into effect today.
Many mosques appeared to comply with the closure. At Baghdad's Sunni northern district of Azamiya, a banner at the closed gate of the hallowed Abu Hanifa mosque read: "The mosque is closed until further notice because of the targeting of imams, preachers and worshippers."
Sunnis, who dominated the government of Iraq for most of its modern history, believe that the majority-Shiite leaders who came into the ascendancy after the 2003 US-led invasion have treated them like second-class citizens.
Sunni discontent has mounted after a bloody April raid by security forces on a protest camp in country's north. Violence has since spiked, claiming at least 5,500 lives according to the United Nations figures, although overall death tolls are still lower than at the height of the conflict in 2004-2008.
Yesterday, bombs targeted two Sunni mosques in Baghdad, killing four. And last week, gunmen killed a cleric as he was leaving a mosque in western Baghdad, police said.
The mosque closures were "prompted by the systematic targeting of and injustice against Sunni clerics, mosques and worshippers," al-Bayati told The Associated Press. "Today, it is not forbidden to shed Sunni blood ... For 11 months we have been saying peacefully that we are facing injustice but the government closes its ears," he said.
