The tests reportedly took place from June 20 through the 23 and according to the Jamaican Gleaner, a total of four players, two throwers and two sprinters, failed to pass them.
There has been no official confirmation about the findings.
The revelation about the sprinters drug use comes a day after news broke that American sprinter Tyson Gay tested positive for banned substances in May and would not be allowed to compete in the World Championship next month.
Scarlett Johansson steps out with fiance after pregnancy reveal
Dennis Rodman pledges to end trips to North Korea