Tiger Woods was asleep at the wheel of his car, which was stopped in the right lane of the roadway, before his arrest on DUI charges on Memorial Day, according to an arrest report released Tuesday.

Woods blamed an "unexpected reaction" to prescription medicine for the incident early Monday in which a Jupiter Police officer found him sleeping in the driver's seat of a black Mercedes on Military Trail in South Florida.

The responding police officer had to wake him up, a probable cause affidavit states. He was wearing a seat belt, and the car was running, the brake lights were illuminated and the right blinker was flashing, it said.

The police report said that tests determined that Woods didn't have alcohol in his system, but an officer noted he had "extremely slow and slurred speech." Woods told officers he took several prescription medications. The report listed Vicodin, which "may impair the mental and/or physical abilities required for the performance of potentially hazardous tasks such as driving a car or operating machinery; patients should be cautioned accordingly," according to the Food and Drug Administration.

Woods was given a roadside sobriety test and was unable to perform the tasks, the police report states.

The onetime No. 1 golfer in the world was held in the Palm Beach County Jail for almost four hours early Monday. He released a statement, apologizing to his family, friends and fans.

Woods has not competed for nearly four months. He is out for the rest of the season while he recovers from back surgery.

In November 2009, he crashed his Cadillac Escalade into a fire hydrant and tree in front of his Isleworth home, which led to revelations of infidelity and shattering his once-pristine image.