Olympic champion Phelps admits drink-driving

Olympic gold medal-winning swimmer Michael Phelps has pleaded guilty to drink-driving.

Phelps entered his plea to a charge of driving under the influence on Friday. He was sentenced to a year and a half of probation.

The 18-time gold medallist was arrested on September 30.

Documents show that Phelps, 29, was leaving the Horseshoe Casino in central Baltimore when he was pulled over.

Police say Phelps registered a .14% on a blood-alcohol test. The legal limit to drive in Maryland is .08%.

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

Phelps entered a six-week treatment programme in October.

This is his second DUI conviction. Phelps pleaded guilty to drink-driving in 2004 in another Maryland county.