Olympic swimmer Michael Phelps pleads guilty in Baltimore DUI charge

BALTIMORE -- Olympic gold medal swimmer Michael Phelps has pleaded guilty to drunken driving in Baltimore almost three months after he was arrested.

Phelps entered his plea to a charge of driving under the influence in Baltimore City District Court on Friday morning. He was sentenced to a year and a half of probation.

The 18-time gold medalist was arrested on Sept. 30. Documents show that the 29-year-old Phelps was leaving the Horseshoe Casino in downtown Baltimore when he was pulled over for speeding and crossing the double yellow line while driving in a tunnel. Police say Phelps registered a .14 percent on a blood-alcohol test. The legal limit to drive is .08 percent in Maryland.

A week after his arrest, USA Swimming suspended Phelps for six months.

Phelps entered a six-week treatment program in October. This is his second DUI conviction. Phelps pleaded guilty to drunken driving in 2004 in another Maryland county.