A man has died from severe burns after catching fire at the Glastonbury festival site ahead of the festival opening on Wednesday.

The man, thought to be in his 20s, caught fire at the Worthy Farm site in the evening of 20 June. He was taken to hospital via air ambulance but later died of his injuries.

In a statement, Avon and Somerset Police said: "We were called by the fire service after reports of a man on fire at the Glastonbury Festival site at about 5.20pm last night.

Glastonbury Festival 2015 preparations
A man has died at Glastonbury following a fire incident Matt Cardy/Getty Images

"The man suffered serious burns and was taken by air ambulance to Southmead Hospital in Bristol. He was transferred to the Queen Elizabeth Hospital in Birmingham, where he sadly later died.

"The man's family have been informed and our thoughts are with them at this time."

The site is currently being set up for more than 150,000 revellers who will descend on the festival from Wednesday onwards.

It is not known whether the man was part of the crew on-site. His death is being treated as unexplained but is not believed to be suspicious, police added.