"Mr AG" shared an arson guide in a Telegram group chat used by UK rioters after the Southport attacks.

The BBC has confronted a neo-Nazi in Finland who shared online instructions on how to commit arson with UK rioters during the summer.

The 20-year-old was an administrator in the Southport Wake Up group on the Telegram messaging app, where he was known as “Mr AG”. He posted the arson manual, which was pinned to the top of the group chat.

In late July and early August, the group was key in helping to organise and provoke protests that turned to violence in England and Northern Ireland.

We tracked Mr AG - whose real name is Charles-Emmanuel Mikko Rasanen - to an apartment on the outskirts of the Finnish capital, Helsinki.

It was from here, more than 1,000 miles away from Southport, that the neo-Nazi took a prominent online role during the UK riots.

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“What we have here is a case of a young man sitting behind his keyboard in a different country starting racist violence in Britain,” they say. “It exposes the transnational nature of the far-right in the world today.”