Incident Summary:

03/17/2017: Assailants stormed a residential building and took civilians hostages in Maawsil al-Jadidah neighborhood, Mosul, Nineveh, Iraq. The assailants then planted explosives-laden vehicles around the houses and positioned snipers on the rooftops to target security forces. A United States airstrike hit the houses, detonating the vehicles. An unknown number of hostages were killed in the blasts and subsequent building collapse. No group claimed responsibility; however, sources attributed the attack to the Islamic State of Iraq and the Levant (ISIL).




Middle East & North Africa

region/u.s. state:



Location Details:
The incident occurred in the Maawsil al-Jadidah neighborhood.

Attack Information
Type of Attack (more) Hostage Taking (Barricade Incident)
Successful Attack? (more) Yes
Target Information (more)
Target Type: Private Citizens & Property
Name of Entity Not Applicable
Specific Description Civilians
Nationality of Target Iraq
Additional Information
Hostages Yes
Number of Hostages 230
US Hostages 0
Outcome Hostage(s) killed (not during rescue attempt)
Ransom 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 Vehicle
Firearms Rifle/Shotgun (non-automatic)
Weapon Details
Explosives-laden vehicles and sniper rifles 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 conflict across sources. Following GTD protocol, the majority reliable estimates are reported here.
Perpetrator Group Information
Group Name Claimed Responsibility
Islamic State of Iraq and the Levant (ISIL) No
Perpetrator Statistics
Number of Perpetrators Unknown
Number of Captured Perpetrators 0
Casualty Information
Total Number of Casualties 230 Fatalities / 0 Injured
Total Number of Fatalities 230
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
"U.S. Says Coalition Planes Struck Area Where Civilian Deaths Reported," Radio Free Europe, March 26, 2017."
"DEVELOPING," Deutsche Presse-Agentur, March 23, 2017."
"US-led coalition Mosul air strike killed up to 240 Iraqi civilians 'because Isis snipers used roof'; Survivors of bombing in al-Jadidasay militants used homes despite their pleas," The Independent, March 28, 2017."