The Olympic Council of Ireland (OCI) says it is "seeking total clarity" on reports that its president Patrick Hickey has been arrested in Brazil over illegal Olympic ticket sales.
Reports in the Brazilian media say Hickey has been arrested for passing on tickets to be re-sold at extortionate prices.
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It is claimed by the Brazilian media that Hickey's arrest is in connection with that of countryman Kevin Mallon, who is alleged to have passed OCI tickets to THG Sports. Mallon is a director of the company.