Brazilian authorities have been criticized for a lack of disaster planning and for allowing homes to be built on property known to become treacherous in the rainy season . The death toll in Rio de Janeiro state has climbed to 741 . `` I think there may be five times what we found until now , '' official says . A man walks past a mural of the Olympic torch during an opening ceremony for the 2016 Summer Olympics at Maracana stadium on August 5, 2016.
The death toll in Rio de Janeiro state has climbed to 741 . `` I think there may be five times what we found until now , '' official says . A man walks past a mural of the Olympic torch during an opening ceremony for the 2016 Summer Olympics at Maracana stadium on August 5, 2016.