India, Nov. 21 -- At least 13 people were treated for smoke inhalation after a massive fire broke out at the COP30 UN climate talks in Belem, Brazil, on Thursday, prompting the evacuation of the venue.

The blaze reportedly started inside a pavilion.

According to the UN, the fire was extinguished within six minutes, and 13 people received treatment for smoke inhalation. The cause of the fire is not yet known, the BBC reported.

"It was climbing the walls and onto the ceiling. People were screaming," Dr. Harshita Umesh, who was giving a talk next to the location where the fire broke out, told BBC News.

"Then I ran, I think I tripped and fell," Umesh said.

Dr. Umesh, a medical doctor, said ambulance staff told her that first responders i...