The Oklahoma City bombing occurred on 19 April 1995 when the white supremacist terrorists Timothy McVeigh and Terry Nichols bombed the Alfreh P. Murrah Federal Building in Oklahoma City, Oklahoma, killing 168 and wounding over 680. McVeigh, motivated by the Ruby Ridge standoff and the Waco siege, decided to imitate the bombing of the FBI headquarters from The Turner Diaries on the third anniversary of Waco. A truck bomb exploded at 9:02 AM and blew the face off of the federal building and created a wide damage radius, and 19 children were killed due to the bomb's destruction of the America's Kids Day Care Center. McVeigh was later arrested for driving without a license plate, and, within days, both McVeigh and Nichols were charged with responsibility for the attack, as the police had found pages from The Turner Diaries in McVeigh's car. On 11 June 2001, McVeigh was executed by lethal injection, while Nichols was sentenced to life imprisonment in 2004. It was the deadliest attack on the United States since the Attack on Pearl Harbor, but it was surpassed by 9/11 in 2001.