<br/>At least one hundred people have been killed after torrential rain caused landslides and flooding in the Brazilian state of Rio de Janeiro.<br/><br/>Thirty-three people died in Rio de Janeiro city after 28cm of rain fell in 24 hours, while 33 were killed in the neighbouring city of Niteroi. . Flooding left another 12 people dead in Sao Goncalo. The rains started right in the rush hour when people were trying to get back home from work Rio de Janeiro's Governor has declared a state of emergency while the city's mayor has told people to stay indoors. Authorities say the transport system is close to collapse. All the major streets of the city are closed because of the floods.