CNN

The Orange County Sheriff’s Office released this mug shot of Al Gore III to the Associated Press.

LOS ANGELES, California (CNN) - Former Vice President Al Gore's son, Albert Gore III, was arrested early Wednesday morning in Orange County, California on suspicion of possessing marijuana and prescription drugs, Jim Amormino of the Orange County Sheriff’s Department told CNN.

He was released from jail on bond Wednesday afternoon.

Gore, 24, was allegedly driving a Toyota Prius at 100 mph on the San Diego Freeway at 2:15 a.m. when a police officer pulled him over. The officer reported that he smelled marijuana and a search of the car yielded less than an ounce of the drug. The prescription drugs Valium, Xanax, Vicodin, and Adderall were in the car as well, police reported.

Amormino told CNN Gore did not have prescriptions for any of the drugs found.

Gore was booked into a Santa Ana jail under a $20,000 bond, the Sheriff’s Department said.

"He did admit to smoking ... some marijuana shortly before the stop," Amormino told reporters in a brief news conference Wednesday afternoon.

Amormino said the former vice president's son was not charged with driving under the influence because a drug expert determined he was not impaired.

He said Gore was "very cooperative" and was "taken into custody without incident."

The arrest comes just days before his father hosts an international concert to combat global warming.

Gore III completed a substance abuse program in 2004 after he was charged with possession of marijuana in Maryland after police observed him driving without his headlights on.

He was ticketed for reckless driving by North Carolina police in August 2000 when he was clocked going 94 mph in a 55 mph zone. Military police arrested him for drunk driving near a military base in Virginia in September 2002.

– CNN's Karan Olson and Traci Tamura contributed to this report