Wildfires spread across Brazil's most populous state of Sao Paulo, prompting highest-level alerts in 30 cities and filling the capital's skies with smoke. "I felt afraid, for the first time I felt very afraid because I had never seen such a scene here in Ribeirao Preto," says a resident of the town of Ribeirao Preto. IMAGES AND SOUNDBITES [TO COMPLETE VIDI36EN8AQ_EN]