January 15, 2011|By the CNN Wire Staff
The death toll from flooding caused by torrential rains in Brazil's Rio de Janeiro state rose to 591 people Saturday, Brazil's official news agency reported.
Most of the deaths were reported in the cities of Nova Friburgo and Teresopolis, located in a mountainous region northeast of Rio, according to Agencia Brasil.
Rescuers have not been able to reach some hard-hit areas and many more people are feared dead, the agency said Friday.
The rain is predicted to continue for several days in areas already submerged in water or slathered with mud.