Brazilian President Dilma Rousseff says security will be reinforced on the country's borders in preparation for the Confederations Cup in June.
She said on Tuesday that beginning in May "a grand military operation will cover our frontiers of nearly 16,000 kilometers (10,000 miles) to prevent crimes and improve security'' for the World Cup warm-up tournament.
Defense minister Celso Amorim said recently about 20,000 troops would be added to reinforce border security during the June 15-30 Confederations Cup.
Brazil will also use newly acquired drones to provide safety for the tournament of continental champions.
Brazil neighbors 10 countries in South America. Most police action in the region is against drug traffic and the illegal entrance of goods.