Ex-Commerce Secretary Bryson won't be charged in California car crashes Updated at 5:10 p.m. ET: Former Commerce Secretary John Bryson will not face criminal charges in California after a trio of traffic accidents last month, according to the Los Angeles County district attorney's office. The announcement came after prosecutors reviewed evidence presented by San Gabriel police, said spokeswoman Sandi Gibbons. The district attorney's report released Tuesday said Bryson's blood tested negative for alcohol and controlled substances but positive for Ambien at "low end therapeutic levels." "Criminalists can not say it was a factor in driving or the collisions," the report said. Doctors treating Bryson agreed he was "suffering from confusion following a seizure and crashed as a result," it said. Doctors said there was insufficient evidence to show "knowing failure to provide personal information for hit and run" or to prove driving under the influence, the report said. Bryson's neurologist initially diagnosed Bryson as having a "complex partial seizure," a Commerce Department official said earlier. This article incudes reporting by The Associated Press and msnbc.com's Jim Gold.