Jose Mariano Beltrame

Jose Mariano Beltrame, Rio's state security secretary, said on Thursday it would be up to the federal government to make a change of plans in response to a threat, but so far no tightening of security has been requested

The risk of a terrorist attack is the main security fear at the Rio Olympics, a top official said Thursday, with the Paris attacks highlighting the potential for Brazil to be sucked into conflict for the first time with Islamic extremists.

Jose Mariano Beltrame, Rio's state security secretary, said on Thursday it would be up to the federal government to make a change of plans in response to a threat, but so far no tightening of security has been requested

The risk of a terrorist attack is the main security fear at the Rio Olympics, a top official said Thursday, with the Paris attacks highlighting the potential for Brazil to be sucked into conflict for the first time with Islamic extremists.