Iran's president Sunday condemned the Saudi execution of a Shiite cleric but also denounced attacks on the Sunni kingdom's embassy and consulate as "totally unjustifiable" after protesters stormed the compounds.

At least 44 people were arrested late Saturday for storming the diplomatic missions in Tehran and Mashhad after Saudi Arabia announced it had executed prominent Shiite cleric Nimr al-Nimr and 46 other men on "terrorism" charges.

Earlier Sunday Iran's supreme leader, Ayatollah Ali Khamenei, said Saudi politicians would face "divine revenge" for their actions.

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