Brazil’s armed forces will be used to bolster security during the meeting of the Group of 20 leading economies in Rio de Janeiro next month, the city’s secretary of state for security said on Tuesday.

Under Brazilian law, the country’s president has the power to temporarily deploy the military to a specific region to patrol the streets as police in cases where regular security forces are insufficient to handle the situation.

The measure, known as the Law and Order Guarantee (GLO), has previously been used to bolster security during other global events Brazil has hosted, such as the 2014 World Cup, the Rio de Janeiro Olympics of 2016 and the 2012 United Nations summit in Rio. +20.

“This law will definitely be used,” Victor Santos, Rio de Janeiro’s state secretary for security, told reporters on Tuesday when asked about the meeting of G20 heads of government. “The host country is responsible for ensuring the safety of those who come,” he added.

Leaders, including US President Joe Biden and China’s Xi Jinping, have confirmed they will be in Rio de Janeiro for the November 18-19 G20 summit.

According to Santos, the armed forces would be deployed in the city of Rio de Janeiro, not in the entire state.

Neither Brazil’s presidential office nor the defense ministry immediately responded to requests for comment on the secretary’s remarks in Rio de Janeiro.

In recent weeks, Rio de Janeiro has faced a series of violent incidents as several hijackers used dozens of city buses to barricade streets and blocked police from entering after freeing passengers.