The campaign targets Santos Port, the country's largest port facility, and involves a total of 46 arrest warrants and 80 search warrants, police said.

　　Investigations which started last year determined that two different criminal gangs were shipping cocaine to Europe, Africa and the Caribbean aboard ships sailing from the port, police commissioner Reinaldo Sperandio told a news conference.

　　Since the beginning of the month, officials have seized 3.7 tons of cocaine, 230,000 euros (316,779 U.S. dollars) in cash, 10 vehicles, a boat and 21 firearms.

　　The drugs were bought in Bolivia and smuggled into Brazil through its border with Paraguay. From there, it was transported to Sao Pulo state, where Santos Port is located, and then shipped overseas.