Brazil police scour sewers for druglords - Yahoo! News UK: "Police scoured sewers under Rio's sprawling slums for hundreds of drug traffickers who fled an unprecedented military onslaught on the favelas that netted Brazil's biggest seizure of marijuanaThe crackdown on the Alemao was the culmination of an offensive that began last week
 Brazil claims 'D-Day' victory on Rio slums.  With Rio's World Cup and Olympic hosting duties looming, some 2,600 paratroopers, marines and elite police backed up by helicopters and armored personnel carriers led a pre-dawn assault Sunday on the traffickers' bastion of Grota, a lawless city within a city with a population of 400,000.
Grota is just one of 15 favelas that make up the Complexo do Alemao. But with an estimated 500 drug dealers thought to be hiding in the maze of slums, only 130 arrests were made.
Officials said the dealers may have escaped through a large network of sewers before the police arrived."