April 19, 1995 and what happened that morning
On the morning of April 19, 1995, at exactly 9:02 a.m. local time, a rented Ryder truck packed with approximately 4,800 pounds of explosive ammonium nitrate fertilizer and nitromethane fuel was detonated in front of the Alfred P. Murrah Federal Building at the corner of 5th Street and Harvey Avenue in downtown Oklahoma City. The blast collapsed the entire front face of the nine-story building and damaged 324 other buildings within a 16-block radius.
The bomb killed 168 people instantly. The dead included federal employees in the Murrah Building (Social Security Administration, HUD, ATF, Marshals Service, DEA), 19 children in the America's Kids daycare center on the second floor of the building, and several civilians who happened to be at the site. More than 680 people were injured, many of them seriously. The shockwave was felt 55 miles away.
The bombing was carried out by Timothy McVeigh, a Persian Gulf War veteran with deep anti-government beliefs, with assistance from co-conspirators Terry Nichols and Michael Fortier. McVeigh was apprehended within 90 minutes of the bombing on an unrelated traffic stop near Perry, Oklahoma. He was tried, convicted of 11 federal crimes, sentenced to death, and executed by lethal injection in 2001. Nichols received life in federal prison; Fortier received a 12-year sentence and was released in 2006.