Wrestler Yogeshwar Dutt's bronze medal from the London Olympics was upgraded to silver after silver medallist from the 2012 Games -- deceased Besik Kudukhov of Russia -- was stripped off his medal for using banned substance.

"Today, I came to know that my Olympic medal has been upgraded to silver. I dedicate this medal to the nation,' Yogeshwar tweeted on Tuesday.

As per Russian agency, flowrestling.org, the four-time world champion and two-time Olympic medallist Kudukhov, who had died in a car crash in 2013 in southern Russia, has been found positive in a dope test conducted in the past by the World Anti-Doping Agency (WADA).

As a result, Yogeshwar, who had bagged a bronze medal in the men's 60kg freestyle category in London Games, was moved up from bronze to silver and joins Sushil Kumar as another silver medallist from the 2012 Olympics.