'Islamic State claims Saudi mosque attack'

Islamic State claimed responsibility for an attack on Friday on a Shi'ite Muslim mosque in eastern Saudi Arabia, US-based monitoring group SITE said on its Twitter account.

The militant group identified the suicide bomber as Abu 'Ammar al-Najdi and said the attack using an explosives-laden belt killed or wounded 250 people, SITE reported. A  suicide bomber blew himself up at a Shi'ite mosque in eastern Saudi Arabia during Friday prayers. 

The attack could further harm relations between Sunnis and Shi'ites in the Gulf region, where tensions have risen during weeks of military operations in Yemen by a Saudi-led coalition against Houthi fighters seen as proxies of regional Shi'ite power Iran.

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