Updated

Brazilian authorities say heavy overnight storms have caused new flooding in Sao Paulo, killing at least one man, toppling cars into buildings, downing power lines and halting traffic.

South America's biggest city has seen a month of heavy rains and repeated flooding.

Sao Paulo state's Civil Defense department says an unidentified homeless man in his 30s died early Monday. He was apparently sleeping in an area hit by flash flooding.

Officials say the death toll in mudslides north of Rio de Janeiro has risen to 809 people.

In the southern state of Santa Catarina, flooding has killed five people and driven at least 18,000 driven from their homes in recent days.