Incident Summary:

12/29/2017: Two suicide bombers opened fire at Marmina Church in Helwan, Cairo, Egypt. At least 10 people, including one assailant, were killed and six other people, including another assailant, were injured in the assault. Additionally, three explosive devices were defused at the scene. This was one of two related attacks targeting Coptic Christians by the same assailants on this date. The Islamic State in Egypt claimed responsibility for the incidents.




Middle East & North Africa

region/u.s. state:



Attack Information
Type of Attack (more) Bombing/Explosion
Successful Attack? (more) Yes
Target Information (more)
Target Type: Religious Figures/Institutions
Name of Entity Marmina Church
Specific Description Coptic Christian Church
Nationality of Target Egypt
Additional Information
Hostages No
Ransom No
Property Damage Yes
Extent of Property Damage Unknown
Value of Property Damage Unknown
Weapon Information
Type Sub-type
Explosives Suicide (carried bodily by human being)
Explosives Unknown Explosive Type
Firearms Automatic Weapon
Weapon Details
An explosives-laden vest, two other explosive devices, and an assault rifle were used in the attack.
Additional Information
Suicide Attack?Yes
Part of Multiple Incident?Yes
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 in Egypt Yes (Confirmed: Unknown; Mode: E-mail)
Perpetrator Statistics
Number of Perpetrators Unknown
Number of Captured Perpetrators 1
Casualty Information
Total Number of Casualties 10 Fatalities / 6 Injured
Total Number of Fatalities 10
Number of U.S. Fatalities 0
Number of Perpetrator Fatalities 1
Total Number of Injured 6
Number of U.S. Injured 0
Number of Perpetrators Injured 1
"Egypt: 10 killed in Cairo church attack by Daesh," Muslim News, December 30, 2017.
"Gunmen attack church near Cairo, killing nine," Straits Times, December 29, 2017.
"Singapore: Gunman kills 9 in Egypt church attack claimed by IS," Channel NewsAsia Online, December 29, 2017.