Croatian goalkeeper Ivan Turina has been found dead in his apartment in Stockholm, his club AIK said in a statement.
The Swedish football club added that Turina "died suddenly in his sleep and there was no suspicion of crime."
The 32-year-old joined AIK from Dinamo Zagreb in 2010 and had one cap for Croatia.
More top news
How is Sainsbury's positioned to tackle the challenges of low-cost rivals and changing shopping habits?
The head of football's anti-discrimination body Kick It Out has responded to attacks by QPR defender Rio Ferdinand in his autobiography
Prime Minister David Cameron and his wife Samantha surprised diners in Solihull by dropping into fast food chain Five Guys for burgers.