>> With just days to go before the Olympics in Rio de Janeiro, Brazilian security forces, used to tackling drug and arms smuggling, are shifting their focus to the threat of terrorism. Specifically to controlling the border area between Brazil, Paraguay and Argentina, but logistical difficulties corruption and a lack of resources are compromising efforts to improve security.
Here at Parana river, Brazil's busiest border point, officers say that they are severely under staffed to fully police the area. Stephen Eisenhammer is at the Brazil-Paraguay boarder.>> We've just been out with the Federal Police on the boat that you can see behind us. They say that there are, every night, smuggling boats, small boats with small motors that cross this river here, carrying everything from cigarettes to drugs and arms.
The challenge of stopping these people is an everyday event for the police here.>> Last month, Brazilian authorities arrested 12 people on suspicion of supporting Islamic State, and discussing an attack during the Games. It was the first time the government has admitted potential terrorist activity within its borders.
Officials have increased checks and camera surveillance at this border post. Intelligence officials have long pointed to this region, home to a sizable Muslim community, as a weak point in Brazilian security. Police say they are monitoring 100 more people with possible links to Islamic extremism.