Incident Summary:

7/27/1970: In a series of related attack, unknown perpetrators bombed the Armed Forces Police Station in San Francisco, California, United States. There were no casualties but the bomb created a five inch hole in the office of the commanding officer and shattered windows at the army base.



United States

North America

region/u.s. state:


San Francisco

Attack Information
Type of Attack (more) Bombing/Explosion
Successful Attack? (more) Yes
Target Information (more)
Target Type: Military
Name of Entity Armed Forces Police
Specific Description Armed Forces Police Headquarters, San Francisco
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 Time Fuse
Weapon Details
Bomb with timing device
Additional Information
Suicide Attack?No
Part of Multiple Incident?Yes
Criterion 1 (more) Yes
Criterion 2 (more) Yes
Criterion 3 (more) Yes
Additional Information Part of a multiple attack with 197007270005. Four days earlier, a bomb was thrown at the California High Patrol office in Oakland and three days after the incident, the Oakland Hall of Justice was bombed (197007230002 and 197007300001).
Perpetrator Group Information
Group Name Claimed Responsibility
Left-Wing Militants No
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
"N.Y. Bank Damaged by Pipe Bomb," New York Times, July 28, 1970.
"Army Target at Coast Blasts," New York Times, July 28, 1970.
"Bomb Breaks Glass In Police Building," Modesto Bee, July 31, 1970.