Was It A Fictional Name?

Since this lead had been one of the few that came out after the hijacking, the FBI chose to pursue it. Unfortunately for the investigation, the DNA of Marla Cooper’s uncle did not match that of any of the paraphernalia left behind by the mysterious D.B. Cooper. Despite that, Marla still said, “Regardless of the findings of the fingerprints, they would be closing the case after this,” even if one of the investigators told her “I am certain your uncle did it. I feel certain that your uncle did it. And that, what’s the point in continuing the investigation?”