Incident Summary:

12/02/2015: Two assailants opened fire on a holiday party at the Inland Regional Center for disabled people in San Bernardino, California, United States. The assailants also attempted to trigger an explosive device, which failed to detonate. Fourteen people were killed and at least 17 people were injured in the attack. Both assailants, identified as Syed Rizwan Farook and Tashfeen Malik, fled the scene but were located and killed in a shootout with police later the same day. No group claimed responsibility for the incident, but the assailants were inspired by the Islamic State of Iraq and the Levant (ISIL).



United States

North America

region/u.s. state:


San Bernardino

Attack Information
Type of Attack (more) Armed Assault
Type of Attack (more) Bombing/Explosion
Successful Attack? (more) Yes
Target Information (more)
Target Type: Government (General)
Name of Entity San Bernardino Department of Public Health
Specific Description Holiday Party
Nationality of Target United States
Additional Information
Hostages No
Ransom No
Property Damage No
Weapon Information
Type Sub-type
Explosives Remote Trigger
Firearms Automatic Weapon
Firearms Handgun
Weapon Details
A remote-controlled explosive device containing three pipe bombs, .223 AR-15 semiautomatic rifles, and 9-mm semiautomatic pistols were used in the attack.
Additional Information
Suicide Attack?No
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 majority reliable estimates are reported here.
Perpetrator Group Information
Group Name Claimed Responsibility
Jihadi-inspired extremists No
Perpetrator Statistics
Number of Perpetrators 2
Number of Captured Perpetrators 0
Casualty Information
Total Number of Casualties 16 Fatalities / 17 Injured
Total Number of Fatalities 16
Number of U.S. Fatalities 15
Number of Perpetrator Fatalities 2
Total Number of Injured 17
Number of U.S. Injured 17
Number of Perpetrators Injured 0
"ISIS goes global: Mapping 50 ISIS attacks that kill 1,100 in 18 countries," CNN Wire, December 17, 2015.
"UPDATE 3-Islamic State says California killers of 14 were their followers," Reuters, December 5, 2015.
"San Bernardino shootings: Pipe bombs found in house of suspects Syed Farook and Tashfeen Malik," International Business Times UK, December 3, 2015.