Three more bodies were recovered in the last 24 hours, while 56 people remain missing as a result of the worst natural disaster to hit the state, the agency said in its latest report on Sunday.

More than 2.3 million residents have been displaced by weeks of flooding caused by swollen rivers, Xinhua news agency reported.

Rio Grande do Sul Governor Eduardo Leite estimated it would take at least a year to rebuild damaged infrastructure in the state capital Porto Alegre and 469 other municipalities.

As weather forecasts predict more rain in Porto Alegre and other major cities of the state this coming week, schools will be closed for 48 hours to reduce the risk.

Rio Grande do Sul, which borders neighboring Argentina and Uruguay, is an important agricultural center in Brazil and the top producer of rice in Latin America.