Incident Summary:

05/16/2018: Assailants armed with samurai swords rammed their vehicle into the entrance of a police headquarters in Pekanbaru, Riau, Indonesia. One police officer and four assailants were killed and three people, including two police officers and a journalist, were injured in the attack. Negara Islam Indonesia (NII) claimed responsibility for the attack.




Southeast Asia

region/u.s. state:



Attack Information
Type of Attack (more) Armed Assault
Successful Attack? (more) Yes
Target Information (more)
Target Type: Police
Name of Entity Traffic Police
Specific Description Riau Province Police Headquarters
Nationality of Target Indonesia
Additional Information
Hostages No
Ransom No
Property Damage No
Weapon Information
Type Sub-type
Firearms Unknown Gun Type
Melee Knife or Other Sharp Object
Vehicle (not to include vehicle-borne explosives, i.e., car or truck bombs)
Weapon Details
Firearms, samurai swords, and a minivan 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 The victims included a police officer, Second Inspector Auzar.
Perpetrator Group Information
Group Name Claimed Responsibility
Negara Islam Indonesia (NII) Yes (Confirmed: Unknown; Mode: Posted to website, blog, etc.)
Perpetrator Statistics
Number of Perpetrators 4
Number of Captured Perpetrators 0
Casualty Information
Total Number of Casualties 5 Fatalities / 3 Injured
Total Number of Fatalities 5
Number of U.S. Fatalities 0
Number of Perpetrator Fatalities 4
Total Number of Injured 3
Number of U.S. Injured 0
Number of Perpetrators Injured 0
"1 dead, 3 injured in sword attack on Indonesian police headquarters," CNN, May 16, 2018.
"IS involved in assault on police HQ in Riau, Indonesia," Xinhua General News Service, May 16, 2018.
"Five dead in samurai sword attack on Indonesian police," Deutsche Welle, May 16, 2018.