Al Gore's son was arrested early Wednesday on suspicion of possessing marijuana and prescription drugs after deputies pulled him over for speeding, authorities said.

Al Gore III, 24, was driving a blue Toyota Prius about 100 mph on the San Diego Freeway when he was pulled over at about 2:15 a.m., Sheriff's Department spokesman Jim Amormino said.

The deputies said they smelled marijuana and searched the car, Amormino said. They found less than an ounce of marijuana along with the anti-anxiety drugs Xanax and Valium; pain medication Vicodin; and Adderall, which is used to treat attention-deficit disorder, he said.

"He does not have a prescription for any of those drugs," Amormino said.

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