Brazilian President Jair Bolsonaro has said his government lacks the resources to fight the record number of fires in the Amazon.
And he again suggested that non-governmental organisations had started fires in the rainforest, but admitted he had no evidence for this claim.
He added that his government was investigating the fires.
Earlier, Brazil’s Environment Minister Ricardo Salles was heckled at a meeting on climate change.
Conservationists have blamed Brazil’s government for the Amazon’s plight.
They say Bolsonaro has encouraged the clearing of land by loggers and farmers, thereby speeding up the deforestation of the rainforest.