Incident Summary:

12/22/2019: Assailants set up a roadblock and ambushed a vehicle carrying Alima humanitarian workers between Monguno and Maiduguri, Gasarwa, Borno, Nigeria. At least six people were killed and five others including three aid workers and two private security personnel were abducted during the attack. The hostages were released on January 16, 2020. The Al-Barnawi faction of Boko Haram, also known as the Islamic State West Africa Province (ISWAP), claimed responsibility for the incident.




Sub-Saharan Africa

region/u.s. state:



Location Details:
The incident occurred between Monguno and Maiduguri.

Attack Information
Type of Attack (more) Armed Assault
Type of Attack (more) Hostage Taking (Kidnapping)
Successful Attack? (more) Yes
Target Information (more)
Target Type: NGO
Name of Entity Alliance for International Medical Action (ALIMA)
Specific Description Workers
Nationality of Target International
Target Type: Police
Name of Entity Nigeria Police Force (NPF)
Specific Description Officer
Nationality of Target Nigeria
Target Type: Private Citizens & Property
Name of Entity Unknown
Specific Description Civil Servant
Nationality of Target Nigeria
Additional Information
Hostages Yes
Number of Hostages 5
US Hostages 0
Days of Kidnapping 25
Outcome Hostage(s) released by perpetrators
Ransom No
Property Damage No
Weapon Information
Type Sub-type
Firearms Automatic Weapon
Firearms Unknown Gun Type
Melee Knife or Other Sharp Object
Weapon Details
Machine guns mounted on pickup trucks 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 and hostage numbers conflict across sources. Following GTD protocol, the majority reliable estimates are reported here.
Perpetrator Group Information
Group Name Group Sub-name Claimed Responsibility
Boko Haram Al-Barnawi faction (Islamic State West Africa Province-ISWAP) Yes (Confirmed: Unknown; Mode: E-mail)
Perpetrator Statistics
Number of Perpetrators 30
Number of Captured Perpetrators 0
Casualty Information
Total Number of Casualties 6 Fatalities / 0 Injured
Total Number of Fatalities 6
Number of U.S. Fatalities 0
Number of Perpetrator Fatalities 0
Total Number of Injured 0
Number of U.S. Injured 0
Number of Perpetrators Injured 0
"Militants free 3 aid workers," The Star (South Africa), January 17, 2020.
"Isis claims execution of 11 Christians in Nigeria in revenge for death of leader Abu Bakr al-Baghdadi," South China Morning Post, December 27, 2019.
"ISIS monsters execute nearly a dozen Christians around Christmastime," New York Post, December 27, 2019.