'US Deputy Secretary of State john Negroponte
The US Deputy Secretary of State reportedly planned the attack on the holy Shia shrines in Samarra to help topple the Iraqi government.
According to an informed source John Negroponte plotted the attack during an unannounced trip to Iraq on June 12 in order to fuel insecurity and sectarian violence in the country.
Negroponte's motive was to overthrow Iraq's legitimate government, the same source added. '