UNESCO has admitted to setting fire to a historic castle on the southern island of Okinawa early on Thursday as a warning to Japan to stop sending world heritage listing requests.

“We’ve tried everything else,” says UNESCO spokesperson Miles Aish.

“It’s probably the only way to get through to them.”

UNESCO tried ignoring requests sent via fax but the frequency has increased over recent years.

“We got rid of our last fax machine four years ago, now they just send copies of facsimiles by registered post.”

“I’m sick of signing for facsimiles.”

Tokyo prosecutors have released a statement saying they believe Carlos Ghosn was a key part of the arson attack.