Qatif and Dammam mosque bombings

The Qatif and Dammam mosque bombings occurred on 22 and 29 May 2015. On Friday May 22, a suicide bomber attacked the Shia "Imam Ali ibn Abi Talib Mosque" situated in Qudeih village of Qatif city in Eastern Province, Saudi Arabia. The Islamic State claimed responsibility for the blast, which killed at least 21 people. The incident was the second deadly attack against Shia in six months.