Nigerian athletic champion Blessing Okagbare is threatened with a prolonged suspension after three more doping cases surfaced.
Okagbare was unable to participate in the 100-meter Olympic semi-finals in July due to a doping offence and was suspended for four years.
The Athletics Integrity Unit (AIU) said that Okagbare tested positive for another substance banned in Slovakia the following month.
“The athlete has been charged with the presence and use of a prohibited substance following the detection of Human Growth Hormone in a sample collected out-of-competition on 19th July in Slovakia and reported to the AIU on 30th July,” AIU said in a statement on Thursday.
The authority also accused Okagbare of not cooperating in the investigation.
“The athlete failed to comply with a formal requirement to produce relevant documents, records, and electronic storage devices, which was issued to the athlete by the AIU on 15th September,” the statement said.
Okagbare has however denied all charges and has requested that each of them be submitted to a hearing before the Disciplinary Tribunal.