According to a report in the Irish Examiner, an unnamed Irish male boxer has allegedly tested positive for a banned substance.
It is understood that the test was done in Ireland before the Olympic team left for Rio in recent days, with the result only emerging today.
There hasn’t yet been any confirmation of the alleged positive sample from Sport Ireland or the Olympic Council of Ireland.
There are seven Irish men boxing at the Games.
A spokesman for Sport Ireland told the Irish Examiner it is precluded from making any comment on any anti-doping matters because of the quasi-judicial nature of how the system is managed. It has never commented on any matters of this nature and would not be doing so in this instance, the spokesman said.
The world amateur Boxing Federation, the AIBA, has said it cannot confirm that an Irish boxer has failed a drugs test, despite reports. They say it's currently a matter for the Irish authority.
More details as we get them.