Incident Summary:

05/29/2020: Assailants opened fire on federal security officers outside of the Ronald V. Dellums Federal Building in Oakland, California, United States. Officer David Patrick Underwood was killed and another officer was injured in the attack. Authorities arrested Steven Carrillo and Robert Justus in connection with the incident, and Justus confessed his involvement as a driver. Authorities stated that Carrillo and Justus were members of the Boogaloo movement. Steven Carrillo pleaded guilty to murder charges in connection with the attack and stated that he was aligned with the Boogaloo movement and wanted to carry out attacks against federal law enforcement personnel. Sources noted that the assailants were members of a Facebook group affiliated with the Boogaloo movement.



United States

North America

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 Department of Homeland Security
Specific Description Contract Security Officers
Nationality of Target United States
Additional Information
Hostages No
Ransom No
Property Damage No
Weapon Information
Type Sub-type
Firearms Automatic Weapon
Weapon Details
A homemade AR-15-style assault rifle using 9-mm ammunition and equipped with a silencer was 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 include officer Dave Patrick Underwood.
Perpetrator Group Information
Group Name Claimed Responsibility
Boogaloo movement Yes (Confirmed: Unknown; Mode: Personal claim)
Perpetrator Statistics
Number of Perpetrators 2
Number of Captured Perpetrators 2
Casualty Information
Total Number of Casualties 1 Fatalities / 1 Injured
Total Number of Fatalities 1
Number of U.S. Fatalities 1
Number of Perpetrator Fatalities 0
Total Number of Injured 1
Number of U.S. Injured 1
Number of Perpetrators Injured 0
"Airman charged with murder of federal officer at courthouse," Associated Press Newswires, June 16, 2020.
"Carrillo Facing Nearly Two-Dozen Counts in relation to Crime Spree," African Manager, June 29, 2020.
"Federal security guard killed in Oakland identified as Pinole man," San Francisco Chronicle: Web Edition Articles (CA), May 31, 2020.