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A mother-and-baby orangutan pair named Raya and Rayu are evacuated by officials from the Natural Resources Conservation Agency [AFP]

Indonesian authorities rescued a mother orangutan and her baby from wildfire smoke on the island of Borneo, officials said Thursday.

The vast archipelago has been battling for weeks to contain wildfires that have left thick smog blanketing parts of Borneo and Sumatra, with haze also drifting across the border to Malaysia, Singapore and the Philippines.

Acting on a tip-off, conservation officials located the orangutan on Wednesday in Central Kalimantan province after it was spotted clinging to the top of a tree, local conservation agency official Muriansyah told AFP on Thursday.