Sao Paulo, May 3 -- The worst storms killed 29 people and left 60 others missing after four consecutive days of intense rainfall, floods and mudslides hit Brazil's southern state of Rio Grande do Sul, Governor Eduardo Leite said on Thursday.

"Unfortunately, we know that these numbers will rise," said Leite, describing the storms as the worst natural disaster in the history of the state, a top agricultural and livestock producer.

Brazilian President Luiz Inacio Lula da Silva on Thursday visited Santa Maria, one of the state's worst-hit cities, and met with Leite. Lula offered federal funding and aid to address the emergency in the state bordering Uruguay and Argentina.

"There will be no shortage of help from the federal government to t...