From Xinhuanet:

Former Chinese Olympian race walker Song Hongjuan was busted for EPO.

According to the Chinese Athletic Association's website, the 24-year-old race walker, who placed 14th in the women's 20 kilometers walk at the Athens Olympic Games four years ago, tested positive for erythropoietin at a competition here in February.

Apparently, according to CNBC, some Russian race walkers have been banned, too.

If race walkers are doping, can there be any hope for clean sports? The short answer is no.