The Oklahoma City bombing was a terrorist attack on April 19, 1995 on the U.S. government. The Alfred P. Murrah Federal Building in Oklahoma City, Oklahoma, United States, was attacked by Timothy McVeigh. The truck bombing destroyed much of the building. As a result it had to be demolished. McVeigh and Terry Nichols detonated a truck bomb, killing 168 people and injuring over 800 people. Until the September 11 attacks, it was the deadliest act of terrorism in the US.