The photographs, on a website that frequently carries official statements from the Islamic State extremist group, document the destruction in the city of Mosul and the town of Tal Afar.
Some of the photos show bulldozers plowing through walls, while others show explosives demolishing the buildings in a cloud of smoke and rubble.
Residents from both Mosul and Tal Afar confirmed the destruction of the sites.
Sunni extremists consider Shiites Muslims heretics, and the veneration of saints apostasy.
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