Jamaica's Olympic 110-metre hurdles bronze medallist Ronald Levy now faces the possibility of a four-year ban after his B sample returned positive for two banned substances.

This confirms the finding in Levy's A sample by the World Anti-Doping Agency (WADA) from an out of competition test last month, in Canada.

It is understood that GW501516-Sulfoxide and GW501516-Sulfone, are the substances found in Levy's sample.

A four-year ban would rule the 31-year-old Westmoreland native out of next year's Paris Olympics, as well as the next two World Athletics Championships editions in 2025 and 2027.

Levy, who also has a 2018 Commonwealth Gold medal in his accolade, had earlier this month confirmed being notified of the adverse analytical finding on November 3, and vowed to defend his integrity, as he "is certain he did not knowingly breach the rules."