Brazilian authorities have claimed that recent attacks by drugs gangs are a desperate response at police efforts to take control of their turf in more than a dozen slum areas.
The local organising committee of the Rio Olympics also promised a trouble-free games.
"The Rio 2016 committee has full confidence in the security plans which have been elaborated jointly with the three levels of government (municipal, state and federal) and presented to the International Olympic Committee (IOC)," it said.
Soccer-Brazil says Rio violence will not affect World Cup
November 26, 2010