Incident Summary:

1/16/1988: Addam Swapp bombed the Kamas Stake Center, a meeting house for Latter Day Saints congregations, in Marion, Utah, United States. There were no casualties but the building was destroyed at a cost of $1.5 million. Swapp was commemorating the nine-year anniversary of the death of John Singer, his father-in-law and a fellow excommunicated member of the LDS Church, who was killed by the police as they attempted to arrest him.



United States

North America

region/u.s. state:



Location Details:
Wasatch Mountains

Attack Information
Type of Attack (more) Bombing/Explosion
Successful Attack? (more) Yes
Target Information (more)
Target Type: Religious Figures/Institutions
Name of Entity Latter Days Saints church
Specific Description Kamas Stake Center in Marion Utah
Nationality of Target United States
Additional Information
Hostages No
Ransom No
Property Damage Yes
Extent of Property Damage Major (likely > $1 million but < $1 billion)
Value of Property Damage $1,500,000.00
Weapon Information
Type Sub-type
Explosives Dynamite/TNT
Weapon Details
50 pounds of dynamite with a booster of ammonium nitrate
Additional Information
Suicide Attack?No
Part of Multiple Incident?No
Criterion 1 (more) Yes
Criterion 2 (more) Yes
Criterion 3 (more) Yes
Additional Information The bomb exploded around 3:00 AM. Over one year before the incident, Addam Swapp accused thirteen people in Marion of being responsible for John Singer's death and called the LDS Church 'evil.' Immediately after the bombing, Swapp stuck a spear into church property with nine feathers to symbolize the nine years it had been since Singer's death. Swapp refused to surrender to authorities and holed up on his property with thirteen other relatives. The stand-off lasted thirteen days and one police officer died during the confrontation.
Perpetrator Group Information
Group Name Claimed Responsibility
Mormon Extremist 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
"Standoff Goes On at Polygamist's Utah Compound," New York Times, January 19, 1988.
Utah Highway Patrol History, "1980 - 1989 / Return to Marion," Utah Department of Public Safety, 2010.
"Domestic News," United Press International, January 16, 1988.