Brazil's environment minister, Ricardo Salles, has been heckled at a meeting on climate change over the record number of fires in the Amazon.
Satellite data published by the National Institute for Space research (Inpe) shows an increase of 85% this year for all of Brazil.
Some of those at Wednesday's meeting shouted "the Amazon region is burning", as Salles stepped on to the podium.
Conservationists have blamed Brazil's government for Amazon's plight.
They say Brazil's far-right president, Jair Bolsonaro, has encouraged the clearing of land by loggers and farmers, thereby speeding up the deforestation of the Amazon rainforest.