Incident Summary:

09/06/2017: An assailant entered the Marathon-Mandan Refinery with a stolen forklift with a plan to attack President Donald Trump in Mandan, North Dakota, United States. The assailant drove the forklift into a ditch while on the refinery grounds before fleeing on foot. He was later arrested. Gregory Lee Leingang pleaded guilty to the attempted attack.



United States

North America

region/u.s. state:

North Dakota


Attack Information
Type of Attack (more) Assassination
Successful Attack? (more) No
Target Information (more)
Target Type: Government (General)
Name of Entity Government of the United States of America
Specific Description President: Donald Trump
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
Vehicle (not to include vehicle-borne explosives, i.e., car or truck bombs)
Weapon Details
A forklift was used in the attack.
Additional Information
Suicide Attack?No
Part of Multiple Incident?No
Criterion 1 (more) Yes
Criterion 2 (more) Yes
Criterion 3 (more) Yes
Doubt Terrorism Proper (more) No
Perpetrator Group Information
Group Name Claimed Responsibility
Anti-Trump extremists Yes (Confirmed: Unknown; Mode: Personal claim)
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
"Inside one man's failed plan to use a stolen forklift to assassinate Trump," The Washington Post, December 3, 2018.