Brazilian authorities arrested 132 people on Thursday during the largest operation against child pornography in the country’s history, G1 reports. About 580 search and seizure warrants have been issued across the country. The operation is being carried out on the eve of the national day to combat violence and sexual exploitation of children and adolescents. On April 26, Brazil’s Federal Police arrested at least 14 suspects in seven states, including Sao Paulo, Minas Gerais, Rio de Janeiro, where officials detected the sharing of pornographic material involving minors. Those arrests marked the second phase of Operation Underground, which was launched a year ago, when 18 suspects were arrested in eight states.