A teenage neo-Nazi who plotted to shoot an Asian friend because he slept with "white chicks" has been locked up for more than 11 years.

Matthew Cronjager, 18, tried to get hold of a 3D printed gun or a sawn-off shotgun to kill his target, who he likened to a "cockroach".

He set himself up as the "boss" of a right-wing terror cell and created an online library to share right-wing propaganda and explosives-making manuals.

Cronjager's plans were scuppered by an undercover police officer who had infiltrated a Telegram group called The British Hand.

Following a trial at the Old Bailey, Cronjager was found guilty of preparing for acts of terrorism and disseminating terrorist publications on Telegram.

He had admitted four charges of possessing terror documents on the first day of his trial.

On Tuesday, the defendant, of Ingatestone, was sentenced to a total of 11 years and four months in youth detention.

Cronjager's victim had said in his statement that he felt "sad, hurt and betrayed".

He said: "The strange thing was it wasn't just the fact that Matt was plotting to kill me that hurt initially, it was the fact that we had been having serious conversations about our future, and we had been exchanging Christmas greetings, meanwhile in the background he was planning to make that my last Christmas, that really hurt."

In mitigation, lawyer Tim Forte said Cronjager "bitterly regrets" the harm he caused and offered an apology.

The court had previously heard how the defendant wanted a "revolution" based on his fascist beliefs, including hatred of non-white people, Jews, Muslims and those with a different sexual orientation to his.

He had offered to lead the UK division of an extreme right-wing group calling itself Exiled 393.

In November last year, Cronjager suggested setting up a collective PayPal account to buy weapons and other items for the group.

On December 13, Cronjager formulated his plot to kill his former friend after he boasted to him of sleeping with three white women.

The defendant told the undercover officer: "I've found someone I want to execute.

"I know it's an overall target and he's a sand n***** that f***** a white girl.

"In fact I think three of them."

Cronjager then added: "They're like cockroaches", the court heard.

When asked if his former friend had raped the girls, he allegedly replied: "Nope, but it's a violation of nature.

"We're not supposed to mix race ... it's not rape by legal definition but it's kind of like rape if that makes sense."

On his arrest on December 29 last year, police seized a large amount of material demonstrating his commitment to an "extreme right-wing cause", jurors heard.

He attempted to explain his behaviour by claiming to police he was a member of anti-fascist organisation Antifa, that had infiltrated various right-wing groups to disrupt and undermine them.

But giving evidence, he accepted he had held extreme far-right views, saying he now felt "ashamed and disgusted" by them.