Incident Summary:

12/2/1985: In a series of four related incidents, an unidentified man sent a letter bomb addressed to Dr. Peter Bours, a physician who performs abortions in Forest Grove, Oregon, United States. The device was discovered at Portland's main post office. The letter bomb was subsequently defused.



United States

North America

region/u.s. state:


Forest Grove

Location Details:
Main post office of Portland, Oregon

Attack Information
Type of Attack (more) Bombing/Explosion
Successful Attack? (more) No
Target Information (more)
Target Type: Abortion Related
Name of Entity Physician who performed abortions
Specific Description Dr. Peter Bours
Nationality of Target United States
Additional Information
Hostages No
Ransom No
Property Damage No
Weapon Information
Type Sub-type
Explosives Letter Bomb
Weapon Details
Letter bomb of incendiary nature that was designed to explode upon opening. It is believed that the device was powerful enough to kill whoever opened it.
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 198512020029, 198512020030, and 198512020031. Dr. Bours had previously been identified in a New York Times Magazine article as a physician who performs abortions.
Perpetrator Group Information
Group Name Claimed Responsibility
Anti-Abortion 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
"Bombs Target Oregon Abortion Agencies," Los Angeles Times, December 5, 1985.
"Bombs Mailed To Four Abortion Clinics, Birth Control Agencies," Associated Press, December 3, 1985.