Event thrown into confusion after conference centre evacuated but UN says no one hurt

• Brazilian president will take fossil fuel phase-out plan to G20 summit

Talks at the Cop30 climate summit in Brazil were disrupted on Thursday after a fire broke out in the venue, triggering an evacuation just as negotiators were hunkering down to try to land a deal to strengthen international efforts to address climate change.

António Guterres, the United Nations secretary-general, had appealed earlier in the day for a deal from the summit, welcoming calls from some for clarity on the hotly disputed subject of weaning the world off fossil fuels.