Botswana Olympic medalist Nigel Amos has been provisionally suspended with immediate effect after testing positive for Metabolites of GW1516.
Amos’s suspension comes ahead of the World Championships which gets under way in Eugene on Friday.
In a statement the Athletics Integrity Unit (AIU) collected the sample from Amos during an out-of-competition test on June 4, 2022.
Amos, 28, won men’s 800m silver at the 2012 London Olympic Games, which was Botswana’s first Olympic medal.
