Brazilian police say they have taken control of the capital's biggest slum in an operation to clear it of drugs gangs.
Hundreds of police and navy troops backed by helicopters and military vehicles entered the "favela," as the shanty towns are known, before dawn.
The authorities said there were no casualties and that no shots were fired during the operation.
The government wants to clear Rio de Janeiro's shanty towns of drugs gangs ahead of the 2014 soccer World Cup and 2016 Olympics, which Brazil is hosting.
compiled from agency reports