The Greek track and field federation (SEGAS) on Wednesday said Olympic medal-winning triple jumper Piyi Devetzi faces punishment for testing positive in 2007 to a doping test.
In 2007 Devetzi she won the bronze medal at the World Championships in Osaka but that now may be in jeopardy.
"The international federation (IAAF) informed SEGAS that the athlete retested positive on a sample taken in 2007. Following this development the federation opened disciplinary proceedings against her," SEGAS said.
Devetzi, now 39, retired in 2009 after IAAF slapped a two-year ban following her refusal to undergo an anti-doping test.
She won two Olympic medals – silver in the Athens 2004 Games and bronze in Beijing in 2008.