Officials said the blaze had engulfed at least 700 hectares of land in the Deliblato Sands special natural reserve, located about 50 kilometres east of Belgrade. (AP Video by Marko Drobnjakovic)

smoke emerges from a forest during a wildfire in Deliblatska Pescara (Deliblato Sands), near the village of Sumarak, 70 kilometers north-west of Belgrade, Serbia, Friday, Aug. 7, 2026. (AP Photo/Darko Vojinovic)

A firefighters helicopter battles a fire in Deliblatska Pescara (Deliblato Sands), near the village of Sumarak, 70 kilometers north-west of Belgrade, Serbia, Friday, Aug. 7, 2026. (AP Photo/Darko Vojinovic)

A Serbian Army helicopter battles a fire in Deliblatska Pescara (Deliblato Sands), near the village of Sumarak, 70 kilometers north-west of Belgrade, Serbia, Friday, Aug. 7, 2026. (AP Photo/Darko Vojinovic)

BELGRADE, Serbia (AP) — Thick gray smoke drifted over a wooded area in northeast Serbia on Friday as authorities raced to contain a major wildfire, while multiple other blazes raged across the country amid extreme heat and prolonged drought gripping the Balkans.