NEW : There are four reported deaths in state of Rio de Janeiro . Journalist Luciani Gomes and CNN 's Marilia Brocchetto , Rafael Romo and Mariano Castillo contributed to this report . Three firefighters are among those dead . It has been happening since August 1 in Sao Paulo state . A dam in the area has given way , adding to the woes .
NEW : There are four reported deaths in state of Rio de Janeiro . Three firefighters are among those dead . It has been happening since August 1 in Sao Paulo state . A dam in the area has given way , adding to the woes .