Russia on Friday said it expects to avoid a blanket ban at the Rio Games over state-run doping as a fresh batch of drug test failures from Beijing 2008 and London 2012 rocked the Olympics.

Brazilian police have arrested 10 members of a group allegedly planning terrorist attacks during the upcoming Olympic Games, Justice Minister Alexandre de Moraes said Thursday.

The group, made up of Brazilians, allegedly declared loyalty to the Islamic State organization and discussed buying weapons.

The international sports tribunal on Thursday rejected an appeal by 67 Russian athletes seeking to overturn an IAAF doping ban on them competing at the Rio Olympics.

Russia's scandal-mired sports minister said Tuesday that four more officials have been suspended over allegations of state-run doping as the International Olympic Committee weighs banning the country from the Rio Games.

The International Olympic Committee said Tuesday it will study "legal options" before deciding whether to ban Russia from the Rio Games over its state-run doping program.

New Italy coach Giampiero Ventura hinted Tuesday that striker Graziano Pelle could risk his Azzurri place following a recent move to China, and gave Mario Balotelli little chance of returning to the national team.

Exactly 50 percent of Brazilians oppose hosting the Olympics in Rio in less than three weeks, a poll released Tuesday found.

The Datafolha poll published in Folha newspaper showed the number of Brazilians unhappy with the hosting of the Olympics has doubled since a similar poll was conducted three years ago.

Italian champions Juventus are set to pay a hefty 94.7 million euros ($105m) release clause in Gonzalo Higuain's contract with Napoli to lure the Argentina star to Turin, reports claimed Monday.

Portugal's Cristiano Ronaldo and Real Madrid team-mate Gareth Bale headlined a 10-man shortlist announced on Monday for the UEFA Best Player in Europe Award.

Russia operated a state-dictated doping system during the 2014 Sochi Winter Olympics and other events, an independent investigator said Monday in a report likely to lead to demands for Russia to be completely banned from the Rio Games.