Timothy McVeigh, the man who planted that bomb, had been infuriated by what happened to the Branch Davidians.

ECONOMIST: An empty field, under God��s eye

Angry and embarrassed, the Attorney General admitted last week that it appears the FBI fired pyrotechnic military tear-gas rounds during the showdown with the Branch Davidians on April 19, 1993.

CNN: The return of Waco

The laboratory at Wetherby has dealt with cases as diverse as the bodies recovered from the Waco siege at the Branch Davidians compound in Texas in 1993, to the assassination of the Swedish prime minister Olof Palme in 1986 and the disappearance of Huddersfield man Peter Falconio in Australia in July 2001.

BBC: Wetherby to Waco - DNA lab's demise