Brazilian police want to speak to the Olympic Council of Ireland (OCI) vice-president John Delaney and temporary chief Willie O'Brien about their involvement in an alleged ticket touting scam.
Patrick Hickey was arrested in Brazil last week as part of an ongoing investigation into alleged ticketing offences and has since stepped aside from his role as OCI president.
OCI offices in Rio were raided by authorities this week, who said they uncovered emails between Hickey and Marcus Evans, whose namesake company owns THG Sports.
Police claim that in the pair's correspondence a director of THG Sports, Kevin Mallon, who was arrested in Brazil this month having allegedly passed OCI tickets to the company, is mentioned.
Delaney, who is also the chief executive of the Football Association of Ireland (FAI), and O'Brien are being sought by police because they were said to be copied into a number of emails believed to relate to the alleged wrongdoing.
"We want to know about his [Delaney's] involvement in this case but he didn't come to Brazil," said investigator Aloysio Falcao following a police media conference.
"All the emails were sent to Patrick Hickey with copy to John Delaney and also to Willie O'Brien because they are the big guys in the council.
"And Patrick Hickey said in the police station that all the decisions were made by the executive committee and these guys are the big guys in the OCI."
O'Brien and Delaney, as well as Hickey's secretary Linda O'Riley, had warrants for their passports to be seized by a Brazilian judge. O'Brien and O'Riley have already returned to Ireland.