Kenya's marathon queen Jeptoo handed two-year doping ban

The biggest doping scandal to hit the East African country in recent years, Jeptoo's case has focused attention on Kenyan athletes who are among the world's best middle and long distance runners but have failed a number of drug tests.

Kenya's sports minister this week said the rise in doping has "embarrassed" his country. David Rudisha, the Olympic 800 metres champion, said he fears for Kenya's hard-won reputation after repeat allegations of doping.

"AK followed due process in her (Rita Jeptoo) matter and it was appropriate that she serves a two-year ban," AK chief executive Isaac Kamande told Reuters.

Jeptoo, provisionally suspended from athletics after the A sample proved positive, had asked for a B check which also tested positive for a banned substance.

Jeptoo,33, has denied doping, telling reporters last year that the accusations against her were "lies".

She could not be reached for comment on Friday.

"We are deeply disappointed in the findings involving Rita Jeptoo, and we are committed to upholding the integrity and credibility of the Boston Marathon," Grilk, executive director of the Boston Athletic Association, said in a statement.

Jeptoo won the Boston Marathon in 2006, 2013 and 2014, and the Chicago Marathon in 2013 and 2014.

"The use of drugs and doping in any sport is deeply disappointing to all of us, especially to the athletes who are competing clean and to the fans," said Chicago Marathon Executive Race Director Carey Pinkowski.

Dozens of Kenyan athletes have failed dope tests in the past two years. Kenyan government officials have blamed the growing doping cases on foreign agents and AK's failure to educate its athletes properly.

Kenya on Wednesday signed a partnership agreement with Chinese and Norwegian anti-doping agencies to help root out drugs cheats.