An investigation has been launched into the death of a person during torrential rain at the Burning Man festival in the US state of Nevada.

No further details have been given about the circumstances of their death. Thousands of people remain stranded at the event after the bad weather turned the ground to deep, slippery mud. Roads in and out are closed as vehicles can barely drive on it.

Burning Man is held in the Black Rock Desert, which is usually dry and dusty.

More rain is expected and the authorities have said that it could be several days before the ground dries up enough for people to leave.

For this reason, they have been told to conserve their food, water and fuel.

The festival's toilets are also out of use, revellers say, because the service vehicles cannot drive on the mud to empty them.

More than 70,000 people had arrived at the site before it was closed on Saturday but the exact number of those still there is unclear.

Some have managed to leave the site, however. American DJ Diplo wrote on X, formerly Twitter, that he and comedian Chris Rock walked 5miles (8km) to a road, where they were given a lift by fans.

The event's organisers have arranged for buses to pick people up from the road and take them to the city of Reno, more than 100 miles away.