Tiger Woods attributed an “unexpected reaction” to prescription medicine for his arrest on a DUI charge that landed him in a Florida jail Monday for nearly four hours.

Woods, the 14-time major champion who had back surgery five weeks ago, was arrested on suspicion of DUI at about 3 a.m. Monday and taken to Palm Beach County jail. He was released on his own recognizance.

An arrest report might be available today, a Jupiter police spokesman said.

“I understand the severity of what I did and I take full responsibility for my actions,” Woods said in a statement Monday evening. “I want the public to know that alcohol was not involved. What happened was an unexpected reaction to prescribed medications. I didn’t realize the mix of medications had affected me so strongly.”

Woods apologized to his family, friends and fans and said, “I expect more from myself, too.”

“I will do everything in my power to ensure this never happens again,” he said.

Woods, whose 79 victories rank No. 2 on the PGA Tour’s career list, has not competed for nearly four months. He is out for the rest of the season while he recovers from fusion surgery performed April 20 in Texas.

Police said Woods was arrested on Military Trail, a six-lane road, south of Indian Creek Parkway. Woods did not say in his statement where he had been or what he was doing at that hour. Jail records show that the 41-year-old was booked into jail at 7:18 a.m. and released at 10:50 a.m.

A police spokesman said she did not have any information about whether the arrest involved drugs or alcohol.