Suicide bomber kills 21 at Saudi Shi'ite mosque, Islamic State claims attack
A suicide bomber killed 21 worshippers on May 22 in a packed Shi'ite mosque in eastern Saudi Arabia, residents and the health minister said, the first attack in the kingdom to be claimed by Islamic State militants.
It was one of the deadliest assaults in recent years in the largest Gulf Arab country, where sectarian tensions have been frayed by nearly two months of Saudi-led air strikes on Shi'ite Houthi rebels in neighboring Yemen.
More than 150 people were praying when the huge explosion ripped through the Imam Ali mosque in the village of al-Qadeeh, witnesses said.
A video posted online showed a hall filled with smoke and dust, with bloodied people moaning with pain as they lay on the floor littered with concrete and glass. More than 90 people were wounded, the Saudi health minister told state television.