BARNARD, Vt. (AP) -- Vermont State Police say drugs and alcohol are not believed to be factors in the single-car crash that seriously injured former FBI director Louis Freeh.

Meanwhile, the New Hampshire hospital where Freeh was taken following the Monday crash in Vermont say they can't acknowledge that Freeh is a patient there.

Former FBI director Louis Freeh at a 2011 news conference. Freeh was airlifted to a hospital Monday, Aug. 25, 2014, after a single-car crash in Vermont, authorities said. (AP Photo/Alex Brandon, File)

Freeh, who led an investigation into the child sex abuse scandal at Penn State and issued a scathing report, was alone in his SUV and wearing a seatbelt when he drove off the road shortly after noon Monday. He struck a mailbox and a row of shrubs before coming to a stop on the side of a tree.

The accident happened in Barnard, a small town about 120 miles northwest of Boston.

No one else was hurt.

State police earlier said Freeh was taken by helicopter to a New Hampshire hospital following the crash Monday in Barnard, a small town about 120 miles northwest of Boston.

Information about Freeh's condition was not made public. His name was not on a list for which patient information was available, according to Dartmouth Hitchcock Medical Center.

Police said Tuesday a preliminary investigation indicated that drugs and alcohol were not factors in the crash. The investigation is continuing. No one else was hurt.

"The thoughts and prayers of the entire FBI remain with former Director Freeh and his family tonight," FBI Director James Comey said in a statement Monday.

Freeh, 64, was a federal judge in New York before serving as FBI director from 1993 to 2001. He previously served six years as a special agent. He founded his consulting firm, Freeh Group International Solutions LLC, in 2007.

In 2011, Penn State hired Freeh to examine the handling of child sex abuse complaints involving former assistant football coach Jerry Sandusky and to recommend changes aimed at preventing abuse.

Following an eight-month, $6.5 million investigation, Freeh issued a blistering report contending that legendary head football coach Joe Paterno and other top Penn State officials concealed what they knew about Sandusky's sexual abuse of children for more than a decade ago to avoid bad publicity.

Sandusky was convicted in June 2012 on 45 criminal counts.

Freeh also has handled other high profile matters, including a bribery case involving the presidential election within FIFA, soccer's international governing body, and a review of the financial settlement program for Gulf Coast residents affected by the BP oil spill.