The authorities in Brazil have arrested 60 policemen accused of receiving regular payments from drug dealers to turn a blind eye to their activities in several shanty towns of Rio de Janeiro.

Eleven suspected drug dealers from Rio's main criminal gang - the Red Command - were also arrested.

The policemen also sold weapons to the gangs, investigators said.

Rio authorities have been trying to reduce crime in the city ahead of the 2014 World Cup and the 2016 Olympics.