Russian racewalking star, who won the WCh 50k in 1999 only to lose his medal after a positive test, and then came back to win silver in Paris 2003 at 40, died last week at the age of 45. Apparently his heart failed:
http://eng.rusathletics.com/nov/nov.php?ind=3061
http://eng.rusathletics.com/nov/nov.php?ind=3061