Gold medalist Michael Phelps pleads guilty to DUI

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 in prison, but the prison sentence is suspended. He must be on probation for a year and a half.

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.