Toronto police have issued arrest warrants for two members of Brazil's Pan Am Games soccer team in connection to an alleged sexual assault in July during the Games.

Police said Andrey Da Silva Ventura, 22, and Lucas Domingues Piazon, 21, are accused of sexually assaulting a woman in Toronto during the Games.

Piazon is currently in England playing for the Reading football club, on loan from the Premier League team Chelsea. He is listed on the team's website.

According to Toronto police, the men met a 21-year-old woman at the Drake Hotel on Queen Street West on the night of Saturday, July 25, as the Games were winding to a close.

The complainant told police the players returned to her home, sexually assaulted her after she fell asleep, then fled.

Toronto Police Insp. Joanna Beaven-Desjardins said Ventura is believed to be playing professional soccer in Brazil. Because Canada and Brazil don't have an extradition treaty, Beaven-Desjardins said police will have to go through an "extradition process" in order to bring him back to Canada.

Piazon is wanted on a provincewide warrant. When asked why the two men are facing different warrants, Beaven-Desjardins referred all questions to the Crown prosecutor's officer, where decisions on warrants are made.

Beaven-Desjardins said because Piazon's warrant only applies to Ontario "we can't go through the extradition process."

"When he does come to Ontario, he is arrestable," said Beaven-Desjardins. "It would be good for the victim, the process and for [the men] to co-operate with Toronto police and come and face their charges."

Beaven-Desjardins said there is no connection between this case and another alleged assault during the Games involving a Brazilian water polo player.