Marion Jones admits drug use

Marion Jones, the American athletics star, is facing a prison sentence after admitting lying about not taking drugs.

The 31- year-old has revealed she used steroids before competing in the Sydney Olympics.

She won five medals at the games in 2000 - including three golds.

Jones has also announced her retirement - she wept as she spoke to reporters outside a court in New York.

"It is with a great amount of shame that I stand before you and tell you that I have betrayed your trust," Jones told reporters outside the court, addressing her fans and family.

"I want you to know that I have been dishonest and you have the right to be angry with me," she said, breaking down in tears. "I have let my country down and I have let myself down."

The head of the US Olympic Committee urged Jones to give back the medals she won at the Sydney Summer Olympics.