The head of the federal police in Sao Paulo said he is braced for a high terror threat during the 2014 World Cup in Brazil, says an ESPN report.

Roberto Troncon Filho told the Folha de S. Paulo newspaper that the World Cup will present unique safety challenges to local authorities.

"In Brazil, the (threat) level is very low, but an event like the World Cup can provide the opportunity for an attack, not against the Brazilian people, but against an international delegation," he was quoted as saying by Folha, Brazil's largest daily.

In addition to hosting the World Cup for the first time since 1950, Brazil will be also host the 2016 Rio Olympics.

"In these occasions, the federal police believe that there is a unique risk and we want to prepare ourselves for a scenario in which the risk would be fairly elevated," Troncon Filho said.