3 positive world champs doping tests investigated

Monaco - Three positive doping tests involving athletes not yet identified are being investigated in samples taken from the IAAF World Championships held in London this month.

The IAAF's independent integrity unit said: "None of the adverse findings relate to medalists."

The unit added details of the cases will be revealed "at relevant points of the disciplinary process."

The three cases emerged from 1 513 blood and urine samples collected and analysed during the competition period. It means less than 0.2 percent of doping control samples were positive.

The IAAF's anti-doping unit says samples will be stored for 10 years to be re-analysed when new testing methods are developed.

The integrity unit also says no suspect betting activity was detected during the 10-day championships.

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