Incident Summary:
10/26/2018: A letter bomb addressed to Tom Steyer, a Democratic donor, was discovered and defused at a mail sorting facility on Rollins Road in Burlingame, California, United States. This was one of 16 coordinated mail bomb attacks and one of two letter bombs addressed to Steyer between October 22, 2018 and November 1, 2018 that targeted critics of President Donald Trump. Cesar Altieri Sayoc was arrested in connection with the incidents. Sources noted that Sayoc's vehicle was covered in right-wing paraphernalia.
Overview
GTD ID:
201810260004
When:
2018-10-26
Country:
United States
Region:
North America
Province/administrative
region/u.s. state:
California
City:
Burlingame
Location Details:
The incident occurred along Rollins road.
What
Attack Information
| Type of Attack () |
Bombing/Explosion |
| Successful Attack? () |
No |
Target Information ()
| Target Type: Private Citizens & Property |
|---|
| Name of Entity |
Not Applicable |
| Specific Description |
Political Activist: Tom Steyer |
| Nationality of Target |
United States |
Additional Information
| Hostages |
No |
| Ransom |
No |
| Property Damage |
No |
How
Weapon Information
| Type |
Sub-type |
| Explosives |
Letter Bomb |
| Weapon Details |
|---|
| A six-inch PVC pipe filled with pyrotechnic powder, fertilizer, pool chemicals, and broken glass as shrapnel was used in the attack. The device was connected to a small battery and an inoperative digital clock and mailed in a manila envelope. |
Additional Information
| Suicide Attack? | No |
| Part of Multiple Incident? | Yes |
| Criterion 1 () |
Yes |
| Criterion 2 () |
Yes |
| Criterion 3 () |
Yes |
| Doubt Terrorism Proper () |
No |
Who
Perpetrator Group Information
| Group Name |
Claimed Responsibility |
| Pro-Trump extremists |
No |
Perpetrator Statistics
| Number of Perpetrators |
1 |
| Number of Captured Perpetrators |
1 |
Casualty Information
| Total Number of Casualties |
0 Fatalities / 0 Injured |
| Total Number of Fatalities |
0 |
| 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 |
Sources
Sources
| "Bomb timeline: What we know about the 10 devices sent to prominent Democrats, Trump critics," Washington Post, October 25, 2018. |
| "Another Suspicious Package Addressed to Tom Steyer: FBI," NBC Bay Area, November 2, 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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