MONACO -- The IAAF says several track athletes who competed at the 2005 world championships have tested positive for doping following re-testing of their samples.
The international track and field body says the names of athletes will be revealed at a later date.
Frozen urine samples were re-tested by the IAAF just within the eight-year statute of limitations for drug violations laid down by the World Anti-Doping Code.
In an email to The Associated Press on Saturday, IAAF deputy general secretary Nick Davies confirmed the announcement last month by Russia's Anti-Doping Agency that it provisionally suspended long jumper Tatyana Kotova for failing a test at the 2005 worlds in Helsinki.
He added that more positive tests from those championships will be announced, although no date was given.