By Vicki Needham - 07/03/12 08:49 PM EDT
Former Commerce Secretary John Bryson won't face criminal charges for a series of traffic accidents last month.
The Los Angeles County District Attorney's Office decided not to file criminal charges against Bryson because the crashes were likely caused by a seizure he suffered while driving, according to the DA's report released Tuesday.
Blood tests of Bryson came back negative for alcohol and controlled substances, but positive for Ambien, a sleep drug, which was at "a low end of therapeutic levels." The criminalist could not tie the drug to Bryson's driving or the accidents, the report said.
"Both treating doctors agree that [the] suspect was suffering from confusion following a seizure and crashed as a result," the report said.
"Based on doctors' opinions there is insufficient evidence to show knowing failure to provide personal information for hit and run."
The report also said that based on Bryson's blood tests and medical condition "there is insufficient evidence to prove driving under the influence."
Bryson was found unconscious in his car after a hit-and-run incident on June 9 in California in which he crashed into one vehicle twice and had another minor crash a short time later.
He resigned from President Obama's Cabinet after initially taking a medical leave of absence. He was sworn in as Commerce secretary last October.
San Gabriel police had pressed prosecutors to charge Bryson with felony hit-and run.