Eyewitnesses reported hearing a loud blast as a bomb squad destroyed an unattended backpack.
The Belgian claims first cycling gold at Rio 2016 during thrilling contest.
Two more athletes expelled from the Rio after testing positive for banned substances.
Fiji face Mexico in the men's football competition at the Fonte Nova Arena on Saturday.
Many have taken to Twitter to point out Rio's 'hypocrisy' based on their own environmental record.
The reigning 100m and 200m champion is the favourite to repeat his achievements at the Rio Olympics.
Malicious content via social media and mobile apps rose by 60% in the two months leading up to the Games.
Since 1992 hosting countries have seen local stock market value increase on average by 25% in the year after the Games.
Hosts Brazil kick off their campaign against Spain on 6 August.
The men's road race is sure to be a highlight on a jam-packed day four in Brazil.
Andy Murray leads Team Great Britain in the Rio 2016 Olympics opening ceremony.
Gisele took centre stage at the Rio Olympics open ceremony, which failed to live up to London's 2012 extravaganza.
'We love sports, but our city needs things like better schools,' says demonstrator.
IBTimes UK shares the best Instagram posts by Olympic athletes getting ready for Rio 2016.
Maracana Stadium hosts curtain raiser to the 31st Olympiad.
Organisers are trucking in schoolchildren to fill out events after reports of thousands of unsold tickets.
American military units are standing by to mobilise in the event of terrorist action.
Brazilian star had been due to light the iconic Olympic flame in the stadium.
The Games will kick off with the opening ceremony at 8pm Rio time on Friday 5 August.
The 21-year-old demonstrated his ability with a goal for Japan in their Olympic opener against Nigeria.
From airline staff to 90s tracksuits, the Olympiads end up in some questionnable looks.
Boxer due to fight on 6 August will be held in jail for 15 days as police conduct attempted rape investigation.