BEIJING, Aug 25: Anti-doping officials unearthed 450 doses of EPO, testosterone and steroids during a raid on a Liaoning athletics school's training camp earlier this month, according to state media.

China is cracking down on the use of banned substances to avoid any embarrassment when it hosts the 2008 Olympics and state sports officials have been unusually quick to reveal details of the Aug. 8 raid.

A spokesman for the Chinese Olympic committee's anti-doping commission told Xinhua news agency that the raid, prompted by a tip-off, uncovered doping of athletes as young as 15 at the Anshan Athletics School training camp in Harbin.

Zhao Jian said anti-doping officials had found 25 bottles of erythropoietin (EPO), nine bottles of testosterone and 17 bottles of steroids in a room where school staff were caught injecting 10 students with drugs.

A further 275 doses of EPO and 124 doses of steroids were subsequently found in a refrigerator in headmaster Shao Huibin's room.

The students, aged from 15 to 18, were preparing for the provincial games. Their teachers and coaches now face criminal prosecution under China's 2004 anti-doping code.

Liaoning is known for producing world class athletes but has previously been embroiled in doping scandals.

Controversial athletics coach Ma Junren, who was based in Liaoning, produced a crop of world class distance runners known as “Ma's Army” in the 1990s.—Reuters