Sprinter Marion Jones has given back the medals she won at the Sydney Olympic Games after admitting that she took drugs that made her run faster.
The 31-year-old American won three golds - in the 100m, 200m and 4x400m relay - and bronzes in the long jump and 4x100m relay at the Games in 2000.
Last week, Jones told she she had taken something called steroids from September 2000 through to July 2001.
She has accepted a two-year ban from athletics and could even go to jail.
A court will decide her sentence in January.
Jones must also give up her claim to any medals, points and prizes dating back to September 1, 2000.
Atheltics officials must now decide if the other athletes who were members of Jones's Olympic medal-winning relay teams must give up their medals.
They have also got to rule on whether the athletes who finished behind Jones get moved up the medal placings in view of what has happened.