Sprint star Veronica Campbell-Brown's doping offence 'lesser' The IAAF have said that the doping case involving suspended Jamaican sprint star Veronica Campbell-Brown appears to involve a "lesser" offence. Jamaican officials said the three-time Olympic gold medallist tested positive for a banned diuretic at a meet in May. IAAF spokesman Nick Davies said "all evidence seems to point to this offence being a lesser one," meaning possible unintentional use of a banned substance.