Swedish ice hockey star Nicklas Backstrom and cross-country skier Johannes Duerr have failed doping tests at the Winter Olympics.
A Swedish Olympic Committee spokesman said that Backstrom tested positive for a substance found in an allergy medication that he has taken for seven years.
Backstrom - a big star in the NHL with Washington Capitals - was initially named in the line-up to play Canada in the gold medal match on Sunday, but was then scratched, without explanation. The Swedes went on to lose 3-0 to the defending champions.
Austrian Duerr has tested positive for EPO, according to the Austrian Olympic Committee.
Duerr was withdrawn from Sunday's 50km mass start free competition and suspended.
The 26-year-old's positive test came from a pre-competition doping control in Obertilliach, Austria on 16 February.
Duerr, who finished eighth in the men's skiathlon on 9 February, was the fifth athlete to test positive in the Sochi Games, with Backstrom the sixth.
EPO, or recombinant erythropoietin, belongs to class S2 on the prohibited substances list.
A statement from the International Ski Federation read: "The IOC disciplinary commission decided on 22 February 2014 that Johannes Duerr is suspended from competing in the men's 50km mass start free."