Kieran Chapman planted it on Friday, but by Sunday morning it was gone.

He said he wanted to "try and restore people's faith in humanity".

Mr Chapman had been informed by the National Trust that they would have to remove it because the site is a protected World Heritage Site.

He told the Newcastle Chronicle: "It's just devastating, isn't it? It genuinely brought people a lot of joy and that's been taken away.

"I honestly thought if it got a good response they might end up keeping it."

The National Trust said: "While regrettably we have had to remove the sapling, we have spoken to the person who planted it, and are working with them to find an appropriate planting spot within the local area."

It said the site is a "globally important archaeological setting, with UNESCO World Heritage designation, and that altering or adding to it can damage the archaeology".

The trust is working with locals and the national park to make plans for the site, and said it was grateful for messages of support.

There was an outpouring of sadness and anger when the original, iconic sycamore that stood near Hadrian's Wall was cut down by an unknown perpetrator.

Read more:
Could Sycamore Gap tree be saved - and why is it so famous?

A 16-year-old boy was arrested on Thursday and released on bail, with a man in his 60s detained the day after.

Police said on Monday he had also been bailed.

The Northumberland tree was a highlight for walkers and visitors, as well as a popular site for many marriage proposals and scattering ashes.

A nearby pub is now offering a hefty bar tab for information.

"Surely someone must know something, or would have seen something," said the manager of The Twice Brewed Inn - which uses the tree on its sign, glasses and ale.

Steve Blair told Sky News: "We offered £1,500 and a couple of other people and local businesses have contributed.

"I believe it is up to £2,000 now for information leading to the capture and prosecution of anyone who had anything to do with it."

Mr Blair also said he fears a downturn in customers now the tree has gone.

Experts believe the tree may be able to regrow, but that it's unlikely to ever be the same.

John Parker, chief executive at The Arboricultural Association, said "there is a chance" of some new shoots, but "the tree will never be able to re-establish itself to the way it was before".

However, Jon Stokes, from The Tree Council, told Sky News it was "worth having hope".

He said: "At this time of year, trees begin to store energy in their roots for next year's growing season - and it is possible that the tree may grow some new shoots next spring."