Perpetrated by Timothy McVeigh and Terry Nichols , the bombing happened Presence at 9:02 am and killed Killing at least 168 people , injured Bodily_harm more than 680 others , and destroyed Destroying one-third of the building .

Within 90 minutes of the explosion , McVeigh was stopped Process_end by Oklahoma Highway Patrolman Charlie Hanger for driving without a license plate and arrested Arrest for illegal weapons possession .

Forensic evidence quickly linked Connect McVeigh and Nichols to the attack ; Nichols was arrested Arrest , and within days , both were charged Judgment_communication .

McVeigh , a veteran of the Gulf War and a U.S. militia movement sympathizer , had detonated Attack a Ryder rental truck full of explosives parked in front of the building .

Motivated by his dislike for the U.S. federal government and unhappy about its handling of the Ruby Ridge incident in 1992 and the Waco siege in 1993 , McVeigh timed Process_start his attack to coincide with the second anniversary of the deadly fire that ended the siege at the Branch Davidian compound in Waco , Texas .

McVeigh was executed Rewards_and_punishments by lethal injection on June 11 , 2001 at the U.S. Federal Penitentiary in Terre Haute , Indiana , and Nichols was sentenced Prison to life in prison in 2004 .

Michael and Lori Fortier testified against McVeigh and Nichols ; Michael was sentenced Prison to 12 years in prison for failing to warn the United States government , and Lori received Receiving immunity from prosecution Legality in exchange for her testimony .