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U.S. Secretary of Commerce John Bryson is suspected of felony hit and run in connection with an incident that took place on Saturday evening, one that the White House was not told about until Sunday night, officials told ABC News. Bryson allegedly hit two cars three times, and was found unconscious behind the wheel of his Lexus.

Jennifer Friedman, director of public affairs for the Commerce Department, said that Bryson, 68, "suffered a seizure" and was "taken to the hospital for examination and remained overnight for observation. He was released and has returned to Washington."

A Commerce Department official says that the Commerce Secretary was given medication to treat the seizure.

Approximately four years ago Bryson blacked out at a Boeing board meeting and was taken to the hospital, a witness tells ABC News.

The Commerce official says that the Commerce Secretary was on personal time with no security detail. He was driving his own vehicle.

Bryson was allegedly driving his Lexus traveling southbound on San Gabriel Boulevard at 5:05 Pacific Time when he rear-ended a Buick that had stopped and was waiting for a train to pass, authorities said.

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*This post has been updated with latest information.