A major fire erupted at the venue of the United Nations COP30 climate summit in Belem, Brazil, on Thursday, prompting the evacuation of thousands of delegates. The blaze started in the pavilion zone, where country exhibits and discussions were being held, though the exact cause remains unknown. Witnesses reported panic as smoke and heat spread rapidly through the crowded area, with security personnel guiding attendees to safety while firefighters battled the flames. The fire was brought under control around 2:20 p.m. local time, according to the COP presidency office. No injuries have been reported so far, but officials said they are closely monitoring the situation. The temporary venue, built on the site of an old airport in the Amazon region, hosts thousands of visitors daily. The two-week global climate conference, scheduled to conclude on Friday, November 21, may extend if last-minute negotiations are required.