Suicide bombers and gunmen attacked Iran's parliament and the Mausoleum of Ayatollah Khomeini in Tehran on Wednesday morning, killing at least 12 people in a twin assault at the heart of the Islamic Republic, Iranian officials and media said.
Islamic State claimed responsibility and released a video purporting to show gunmen inside the parliament building and one body, apparently dead, on the floor.
Attacks are highly rare in Tehran and other major cities though two Sunni militant groups, Jaish al-Adl and Jundallah, have been waging a deadly insurgency, mostly in more remote areas, for almost a decade.
Iran's restive Sistan and Baluchestan province, in the southeast on the borders with Pakistan and Afghanistan, is home to the Balouch minority and has long been a hotbed of Sunni insurgents fighting the Shi'ite-led Islamic Republic.
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