Freeh was interviewed and does not remember why he crashed in Barnard on Aug. 25, Vermont State Police said. His lack of memory, the circumstances of the crash and lack of a mechanical problem means Freeh likely fell asleep, police said, while acknowledging that they may never know what happened.
Police have said drugs and alcohol weren't factors in the crash and Freeh, who lives in Wilmington, Delaware, will not be charged.
Freeh, 64, was airlifted to Dartmouth-Hitchcock Medical Center in Lebanon, New Hampshire, after the accident. The hospital on Wednesday would not provide any information about his condition.
State Police Capt. Ray Keefe said police did not consider if Freeh was using a cellphone before the crash, and did not examine his phone, because the accident was not consistent with one of a distracted driver; no brake or swerve marks were left on the road.
Freeh issued a statement Friday through the office of U.S. Sen. Patrick Leahy saying he was grateful for the care and support he has received since he was injured. He thanked several officials including Vice President Joe Biden and FBI Director James Comey as well as FBI agents and employees.