The UN climate talks COP30 have been evacuated due to a fire breaking out inside the venue in Belém, Brazil.
BBC journalists saw flames and smoke in the pavilion area before they were rushed outside, where fire engines raced past.
The UN said the fire was extinguished after six minutes, and 13 people were treated for smoke inhalation. The cause of the blaze is still unknown.
The talks were in the final hours of trying to agree on next steps to tackle climate change, but the fire has disrupted negotiations, and the talks remain closed.
BBC/Tom InghamDr. Harshita Umesh, who was giving a talk next to where the fire broke out, described chaos: It was climbing the walls and onto the ceiling. People were screaming. Then I ran, I think I tripped and fell. Emergency responders treated victims for smoke inhalation, with reports indicating some suffered lung injuries.
After the alarm, hundreds of delegates were left sitting outside in high humidity and temperatures, waiting for updates and seeking shelter.
The fire's impact on negotiations could be significant, with multiple delegations forced to seek refuge elsewhere.
UN security is now assessing the venue for safety as the delegates await resumption of talks regarding urgent climate action.
