 By 1955, Cvetic had been largely discredited as a witness.On April 21, 1955, the Justice Department's Committee on Security Witnesses unanimously recommended that Cvetic not be used as a witness unless his testimony could be corroborated by external sources.This coincided with continued FBI concerns regarding Cvetic's embellishment of the facts, including one instance in which he claimed to have defused a Nazi spy plot single-handedly.