FBI Matched DNA
In 2001, the FBI matched DNA from Hoffa's hair—taken from a brush—with a strand of hair found in a 1975 Mercury Marquis Brougham driven by his friend Charles "Chuckie" O'Brien on July 30, 1975. Police and Hoffa's family had long believed that O'Brien played a role in Hoffa's disappearance. O'Brien had denied being involved in Hoffa's disappearance and that Hoffa had never been a passenger in his car. It was not clear what date Hoffa had been in the car.