Incident Summary:

05/22/2015: A suicide bomber detonated an explosives-laden belt at the Imam Ali Mosque in Al Qudaih neighborhood, Qatif city, Eastern province, Saudi Arabia. In addition to the bomber, 22 people were killed and 100 others were injured in the blast. The Najd Province of the Islamic State claimed responsibility for the incident.



Saudi Arabia

Middle East & North Africa

region/u.s. state:



Location Details:
The incident occurred in Al Qudaih neighborhood

Attack Information
Type of Attack (more) Bombing/Explosion
Successful Attack? (more) Yes
Target Information (more)
Target Type: Religious Figures/Institutions
Name of Entity Imam Ali Mosque
Specific Description Mosque
Nationality of Target Saudi Arabia
Additional Information
Hostages No
Property Damage Yes
Extent of Property Damage Minor (likely < $1 million)
Value of Property Damage Unknown
Weapon Information
Type Sub-type
Explosives/Bombs/Dynamite Suicide (carried bodily by human being)
Weapon Details
An explosives-laden belt was used in the attack.
Additional Information
Suicide Attack?Yes
Part of Multiple Incident?No
Criterion 1 (more) Yes
Criterion 2 (more) Yes
Criterion 3 (more) Yes
Doubt Terrorism Proper (more) No
Additional Information Casualty numbers for this incident conflict across sources. Following GTD protocol, the most recent reliable estimates are reported here.
Perpetrator Group Information
Group Name Claimed Responsibility
Najd Province of the Islamic State Yes (Confirmed: Unknown; Mode: Posted to website, blog, etc.)
Perpetrator Statistics
Number of Perpetrators 1
Number of Captured Perpetrators 0
Casualty Information
Total Number of Casualties 23 Fatalities / 100 Injured
Total Number of Fatalities 23
Number of U.S. Fatalities 0
Number of Perpetrator Fatalities 1
Total Number of Injured 100
Number of U.S. Injured 0
Number of Perpetrators Injured 0
"Turkey sides with Saudi to fight terrorists after mosque attack," Xinhua General News Service, May 23, 2015."
"Saudi IDs bomber after kingdom's deadliest attack in years," Agence France Presse -- English, May 23, 2015."
"Shiite mourners mass in Saudi Arabia for bomb victim," Associated Press International, May 30, 2015."