Terry Nichols: McVeigh had high-level help

Oklahoma City bombing conspirator Terry Nichols says a high-ranking FBI official "apparently" was directing Timothy McVeigh in the plot to blow up a government building and might have changed the original target of the attack, according to a new affidavit filed in U.S. District Court in Utah.

The official and other conspirators are being protected by the federal government "in a cover-up to escape its responsibility for the loss of life in Oklahoma," Nichols claims in a Feb. 9 affidavit.

In his affidavit, Nichols says he wants to bring closure to the survivors and families of the attack on the Alfred B. Murrah Federal Building, which took 168 lives. He alleges he wrote then-Attorney General John Ashcroft in 2004, offering to help identify all parties who played a role in the bombing but never got a reply.

A curious lack of curiosity on the part of the former Attorney General.