Incident Summary:
05/13/2018: Three suicide bombers detonated explosives-laden belts at the Indonesian Christian Church (GKI) on Jalan Diponegoro road in Surabaya, East Java, Indonesia. In addition to the three assailants, one person was killed in the attack. This was one of three related attacks targeting churches in Surabaya in which 40 people were injured across the attacks. Jamaah Ansharut Daulah claimed responsibility for the incident.
Overview
GTD ID:
201805130011
When:
2018-05-13
Country:
Indonesia
Region:
Southeast Asia
Province/administrative
region/u.s. state:
East Java
City:
Surabaya
Location Details:
The incident occurred along Jalan Diponegoro road.
What
Attack Information
| Type of Attack () |
Bombing/Explosion |
| Successful Attack? () |
Yes |
Target Information ()
| Target Type: Religious Figures/Institutions |
|---|
| Name of Entity |
Indonesian Christian Church (GKI) |
| Specific Description |
Church |
| Nationality of Target |
Indonesia |
Additional Information
| Hostages |
No |
| Ransom |
No |
| Property Damage |
Yes |
| Extent of Property Damage |
Minor (likely < $1 million) |
| Value of Property Damage |
Unknown |
How
Weapon Information
| Type |
Sub-type |
| Explosives |
Suicide (carried bodily by human being) |
| Weapon Details |
|---|
| Explosives-laden belts made from triacetone triperoxide (TATP) were used in the attack. |
Additional Information
| Suicide Attack? | Yes |
| Part of Multiple Incident? | Yes |
| Criterion 1 () |
Yes |
| Criterion 2 () |
Yes |
| Criterion 3 () |
Yes |
| Doubt Terrorism Proper () |
No |
| Additional Information |
Casualty numbers conflict across sources. Following GTD protocol, the majority most reliable estimates are reported here. Casualty numbers represent a division of the total number of those wounded across incidents 201805130010, 201805130011, and 201805130012. |
Who
Perpetrator Group Information
| Group Name |
Claimed Responsibility |
| Jamaah Ansharut Daulah |
Yes (Confirmed: Unknown; Mode: Posted to website, blog, etc.) |
Perpetrator Statistics
| Number of Perpetrators |
1 |
| Number of Captured Perpetrators |
0 |
Casualty Information
| Total Number of Casualties |
4 Fatalities / 10 Injured |
| Total Number of Fatalities |
4 |
| Number of U.S. Fatalities |
0 |
| Number of Perpetrator Fatalities |
1 |
| Total Number of Injured |
10 |
| Number of U.S. Injured |
0 |
| Number of Perpetrators Injured |
0 |
Sources
Sources
| "News Church security officer latest fatality of Surabaya church bombings," Jakarta Post, May 19, 2018. |
| "Family of six behind deadly Surabaya church bombings; At least 13 killed, 40 wounded in attacks on 3 churches during morning services," The Straits Times (Singapore), May 14, 2018. |
| "Ten injured in fourth bombing to hit Indonesian city in 24 hours," Telegraph, May 14, 2018. |
Criteria
Criteria 1
The act must be aimed at attaining a political, economic, religious, or social goal. In terms of economic goals, the exclusive pursuit of profit does not satisfy this criterion. It must involve the pursuit of more profound, systemic economic change.
Criterion 2
There must be evidence of an intention to coerce, intimidate, or convey some other message to a larger audience (or audiences) than the immediate victims. It is the act taken as a totality that is considered, irrespective if every individual involved in carrying out the act was aware of this intention. As long as any of the planners or decision-makers behind the attack intended to coerce, intimidate or publicize, the intentionality criterion is met.
Criterion 3
The action must be outside the context of legitimate warfare activities. That is, the act must be outside the parameters permitted by international humanitarian law (particularly the prohibition against deliberately targeting civilians or non-combatants.
Doubt Terrorism Proper
The existence of a "Yes" for "Doubt Terrorism Proper?" records reservation, in the eyes of GTD analysts, that the incident in question is truly terrorism. Such uncertainty, however, was not deemed to be sufficient to disqualify the incident from inclusion into the GTD. Furthermore, such a determination of doubt is subsequently coded by GTD analysts as conforming to one of four possible alternative designations: 1) Insurgency/Guerilla Action; 2) Internecine Conflict Action; 3) Mass Murder; or 4) Purely Criminal Act.
Alternate Designation
The determination of "yes" for "Doubt Terrorism Proper" by GTD analysts is coded as conforming to one of four possible alternative designations: 1) Insurgency/Guerilla Action; 2) Internecine Conflict Action; 3) Mass Murder; or 4) Purely Criminal Act.
Successful Attack
Success of a terrorist strike is defined according to the tangible effects of the attack. For example, in a typical successful bombing, the bomb detonates and destroys property and/or kills individuals, whereas an unsuccessful bombing is one in which the bomb is discovered and defused or detonates early and kills the perpetrators. Success is not judged in terms of the larger goals of the perpetrators. For example, a bomb that exploded in a building would be counted as a success even if it did not, for example, succeed in bringing the building down or inducing government repression.
Type of Attack
This field captures the general method of attack and often reflects the broad class of tactics used. It consists of the following nine categories:
- Assassination
- Armed Assault
- Unarmed Assault
- Bombing/Explosion
- Hijacking
- Hostage taking (Barricade Incident)
- Hostage taking (Kidnapping)
- Facility / Infrastructure Attack
- Unknown
Target Information
This field captures the general type of target. It consists of the following 22 categories:
- Abortion Related
- Airports & Airlines
- Business
- Government (General)
- Government (Diplomatic)
- Educational Institution
- Food or Water Supply
- Journalists & Media
- Maritime (includes Ports and Maritime facilities)
- Military
- NGO
- Other
- Police
- Private Citizens & Property
- Religious Figures/Institutions
- Telecommunication
- Terrorists
- Tourists
- Transportation (other than aviation)
- Unknown
- Utilities
- Violent Political Parties
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