Britain's double Olympic champion Mo Farah missed two drug tests in the run-up to the 2012 London Games, the Daily Mail reported Thursday.

The Mail's story comes at an awkward time for the 32-year-old Farah following recent doping allegations against his coach, Alberto Salazar.

Farah backed out of a meeting in Birmingham earlier this month in the wake of accusations made against Salazar and Galen Rupp, Farah's American training partner.

The two men have denied the claims, while Farah has not been accused of doing anything illegal.

UK Anti-Doping (UKAD) rules state an athlete who misses three tests in any 12-month period (reduced from 18 months since 2013) can face a ban of up to four years.