SOCHI, Russia -- Austrian cross-country skier Johannes Duerr, who placed eighth in the Sochi Olympics skiathlon, has tested positive for performance-boosting EPO, the Austrian Olympic Committee said on Sunday.

Duerr, 26, is the fifth athlete to test positive in the Games that conclude later on Sunday.

“I am shocked,” Austrian Olympic chief Karl Stoss said. “His immediate exclusion from the Olympic team has been completed.”

Latvian men's ice hockey player Vitaljis Pavlovs was thrown out of the Sochi Olympics earlier on Sunday after he tested positive for methylhexaneamine

German biathlete Evi Sachenbacher-Stehle, Italian bobsleigh athlete William Frullani and Ukraine's cross-country skier Marina Lisogor have also been caught doping at Russia's first Winter Games.

The IOC is conducting a record 2,500 doping tests in Sochi. The 2010 Vancouver Olympics had one positive case.

Four years earlier at the Turin Olympics, the Austrian cross country and biathlon teams had their headquarters raided by Italian police and drugs testers.

None tested positive but half a dozen athletes were banned after the discovery of syringes and other equipment and the Austrian Olympic Committee was fined for anti-doping rules violations.