SOCHI, Feb. 23 -- Austrian cross-country skier Johannes Duerr has been thrown out of the Sochi Winter Olympics after testing positive for EPO, in the fifth doping case of the Olympics.

"It is a black day for us," Austrian Olympic Committee President Karl Stoss said at a news conference on Sunday.

Duer tested positive on Feb. 16 in Austria where he had returned for training after finishing eighth in the men's skiathlon on Feb. 9. He had been scheduled to compete in the 50-kilometer mass start on Sunday.

It was announced early Sunday that Latvian ice hockey player

Vitalijs Pavlovs has tested positive for the banned substance

methylhexanamine and been kicked out of the Games.

The three other cases involved Ukrainian cross-country skier Marina Lisogor, German biathlete Evi Sachenbacher-Stehle and Italian bobsledder William Frullani.

Doping in previous Winter Olympics:

Vancouver 2010

Cross-country skier Kornelia Marek of Poland tested for EPO. Thirty other athletes were caught positive in the tests ahead of the Olympics.

Turin 2006

Russian biathlete Olga Pyleva tested for cardephone. Wolfgang Rottmann, Wolfgang Perner, Martin Tauber, Juergen Pinter, Johannes Eder and Roland Diethart were kicked out of the games after blood doping instruments were found in the Austrian cross-country ski and biathlon teams.

Salt Lake City 2002

Cross-country skiers Johann Muehlegg of Spain, Larisa Lazutina and Olga Danilova, both of Russia, all tested for the blood doping substance NESP. British alpine skier Alain Baxter tested for methamphetamine and a Belarussian ice hockey player was caught for nandrolone.

Austrian cross-country skiers Marc Mayer and Achim Walcher were disqualified after the games when blood doping instruments were found found in their rooms.

Nagano 1998

Snowboarder Ross Rebagliati of Canada tested for marijuana but kept his snowboard gold because marijuana was not fully forbidden.

Calgary 1988

Polish ice hockey player Jaroslav Morawiecki tested for testosterone.

Sarajevo 1984

Mongolian cross-country skier Batsuch Purewjal tested for methadone.

Innsbruck 1976

Soviet cross-country skier Galina Kulakova tested for ephedrine, Czechoslovakia ice hockey player Frantisek Pospisil for codeine.

Sapporo 1972

German ice hockey player Alois Schloder tested for ephedrine.