ISIS took responsibility for the suicide bombing carried out by Abu Umar Najdi on a Shia mosque in Qateef, Saudi Arabia.
At least 30 Shia were killed and 150 wounded in the blast.
Suicide attack in mosque in qateef #SaudiArabia shia populated area pic.twitter.com/opyOfO1hqN
— ISI (@ISI_RT) May 22, 2015