Incident Summary:

10/28/1986: In a series of seven related attacks carried out jointly by the Macheteros, Organization of Volunteers for the Puerto Rican Revolution, and the Armed Forces of Popular Resistance (FARP), a pipe bomb was detonated at Fort Buchanon in San Juan, Puerto Rico. Two other bombs at Fort Buchanon were also discovered unexploded. There were no casualties, but one military truck was destroyed.



United States

North America

region/u.s. state:

Puerto Rico

San Juan

Attack Information
Type of Attack (more) Bombing/Explosion
Successful Attack? (more) Yes
Target Information (more)
Target Type: Military
Name of Entity United States military installation in Puerto Rico
Specific Description Fort Buchanon
Nationality of Target United States
Additional Information
Hostages No
Ransom No
Property Damage Yes
Extent of Property Damage Minor (likely < $1 million)
Value of Property Damage Unknown
Weapon Information
Type Sub-type
Explosives Pipe Bomb
Weapon Details
three pipebombs
Additional Information
Suicide Attack?No
Part of Multiple Incident?Yes
Criterion 1 (more) Yes
Criterion 2 (more) Yes
Criterion 3 (more) Yes
Additional Information This is part of a multiple attack with 198610280017, 198610280019, 198610280020, 198610280021, 198610280022, and 198610280023. The bomb was discovered around 12:30 AM. The Macheteros, Organization of Volunteers for the Puerto Rican Revolution, and the Armed Forces of Popular Resistance (FARP) jointly released a communiqué taking credit for this attack. Moreover, at 6:45 AM the Macheteros claimed this incident in a phone call to the Associated Press.
Perpetrator Group Information
Group Name Claimed Responsibility
Armed Forces of Popular Resistance (FARP) Yes (Confirmed: Unknown; Mode: Other)
Macheteros Yes (Confirmed: Unknown; Mode: Other)
Organization of Volunteers for the Puerto Rican Revolution Yes (Confirmed: Unknown; Mode: Other)
Perpetrator Statistics
Number of Perpetrators Unknown
Number of Captured Perpetrators Unknown
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
"FBI Analysis of Terrorist Incidents in the United States 1986," Terrorist Research and Analytical Center, Terrorism Section Criminal Investigative Division, FBI, 1986.
Harvey W. Kushner, "Encyclopedia of Terrorism," Sage Publications, 2003.
"Explosions Go Off At Two U.S. Facilities; Bombs Found At Five Sites," Associated Press, October 28, 1986.