Forest fires raging in northeast Brazil are forcing indigenous people out of their traditional territories and threatening uncontacted tribes, an indigenous leader said on Wednesday.

Fire season in the Amazon and surrounding savanna normally lasts from July to November, but burning has become more intense due to climate change and illegal logging, said Sonia Guajajara, National Coordinator of the Association of Indigenous Peoples.

Uncontacted members of the Awa tribe live in areas affected by fires, and some have been forced out of the jungle, Guajajara told the Thomson Reuters Foundation.