CRICKETER Jesse Ryder tested positive for a performance-enhancing stimulant, RadioLive reported Tuesday morning.
Radio Live reported that Ryder tested positive while playing for Wellington but was not told until after he was released from Christchurch Hospital following an assault which left him in an induced coma.
Ryder was attacked outside a Christchurch bar in March.
He suffered a head injury and spent two days in an induced coma.
A hearing by Drug Free Sport NZ was reportedly held earlier this month during which his lawyers said he had taken a poorly-labelled weight-loss supplement.
A New Zealand Cricket spokeswoman said the Sports Disputes Tribunal was expected to release its findings on the matter this afternoon.
"Everyone will just have to wait for that official release from that organisation,'' she said.
Ryder is expected to be banned for about six months, which will be announced some time this week.
Radio Live reporter John Matheson said Ryder found out about the positive test just a week after coming out of hospital.
"Unfortunately for Jesse he wanted to lose some weight so back in March [he] walked into a chemist and, as I understand it, grabbed a product from the chemist.
"He went home, did the due diligence on it in terms of jumping on Google, checking all the ingredients were safe for him to have and not on the wider banned list.''
Matheson said Ryder's representatives had said that the product had been mis-labelled and did not say that it contained the stimulant.
Two men were charged with assaulting Ryder outside a Christchurch bar on March 28.
A 20-year-old carpet layer pleaded guilty to one charge of assault and a 37-year-old builder has elected trial by jury, which has yet to be heard.
Ryder, 28, who had been playing for the Wellington Firebirds, had negotiations with four of New Zealand's six major associations before settling on Otago in his bid to relaunch his international career.
Ryder's manager Aaron Klee has said Ryder wants to return to the Black Caps, for whom he last appeared on February 29 last year.
He made himself unavailable after a "deeply stressful and emotional time'' in the spotlight.
Ryder's chequered career has earned him a cult following, as well as plenty of opprobrium since his international debut in 2008.