The Oklahoma City Bombing occurred on April 19, 1995, when a truck filled with explosives detonated outside the Alfred P. Murrah Federal Building. The attack killed 168 people, including 19 children, and injured over 600 others, making it one of the deadliest acts of domestic terrorism in U.S. history. The bombing was carried out by Timothy McVeigh and his accomplice, Terry Nichols, as a protest against the federal government. McVeigh was arrested shortly after the attack and later executed in 2001, while Nichols received a life sentence without parole for his role in the crime.