FBI agents

FBI agents have spent three days in Brazil helping train local police officers to respond in case of terrorist attacks during the 2014 World Cup.

The Sao Paulo state public safety department said Friday the training included lectures about emergency response and investigation technique involving chemical and bacterial agents and even nuclear attacks, reports The Associated Press.

Brazil has never been the target of a major terrorist attack. But local authorities say the country may be at risk in the next few years as it hosts high-profile sporting events such as the World Cup and the 2016 Olympics in Rio.

Rio was picked to host the first Olympics in South America. Brazil will be organizing the World Cup for the first time since 1950, and the Confederations Cup will be held next year.