The dramatic blaze, which resulted in the building's partial collapse, started at 1:36 a.m. local time (12.36 a.m. ET), according to a Sao Paulo Fire Department spokesman.
The blaze is now under control, the spokesman added.
The blaze started in the early hours of Tuesday morning.
onto the department's official Twitter account suggesting that one person had been spotted calling for help on the building's upper floors, the spokesman says the department does not expect any deaths or injuries.
Atualizando Oco de Incêndio em Apartamento, Largo do Paisandu, 100 – República. Subiu para 24 o numero de Vtrs no combate ao incêndio, 57 homens, muito fogo pelo local, há 1 Vítm pedindo soscorro no último andar. Aguardamos mais informações do local.— 193-Bombeiros PMESP (@BombeirosPMESP) May 1, 2018
As many as 160 firefighters in 57 vehicles responded to the massive fire at a building on the Largo do Paisandu street in the downtown part of the city.
The cause of the fire is currently unknown, according to the spokesman, who added that he does not know the total number of floors in the building due to the partial collapse.