Sources close to the Pentagon study say Timothy McVeigh did play a role in the bombing but peripherally, as a "useful idiot." The multiple bombings have a Middle Eastern "signature," pointing to either Iraqi or Syrian involvement."
-------------------------------------------------------------------------------- The quote is from an article in the 3-20-1996 Strategic Investment Newsletter. At the time, William Colby, former CIA Director, was an editor for the publication. I believe his status as editor contributes to the credibility of the article.
It looks like the evidence supports the Pentagon report conclusion.
http://www.fas.org/irp/threat/mcveigh/part08.htm
PETITION FOR WRIT OF MANDAMUS OF PETITIONER-DEFENDANT, TIMOTHY JAMES McVEIGH AND BRIEF IN SUPPORT MARCH 25, 1997
19. May 6, 1996 Letter to Joseph H. Hartzler concerning an article in Strategic Investment magazine which referenced a classified Pentagon study concerning the bombing of the Murrah Building. This letter requested information concerning this classified study. See D.E. 1923 (Vol. III Exhibit "P").
Some dismiss it as being akin to Elvis sightings, but a few top Defense officials think Oklahoma City bomber Tim McVeigh was an Iraqi agent. The theory stems from a never-before-reported allegation that McVeigh had allegedly collected Iraqi telephone numbers. Why haven't we heard this before about the case of the executed McVeigh? Conspiracy theorists in the Pentagon think it's part of a coverup.