At least six buses were burned in Sao Paulo in a single day, apparently as a protest against the flooding that occurred in various districts of Brazil's largest city, authorities said Friday.

Most of the bus burnings were perpetrated on the southern fringe of the city, an area swamped by floods from last Wednesday's torrential rains, a spokesperson for the transportation company SP Trans bus told Efe.

Buses were also burned by protesters in the impoverished eastern neighborhood of Itaquera, near Arena Corinthians soccer stadium, which will be a key venue when Brazil hosts the 2014 World Cup.

The fires caused no injuries and no one was arrested, according to media reports.

Dozens of buses have been set on fire in Sao Paulo since the start of 2013. EFE