Three Nazi-worshipping extremists have been found guilty of planning terror attacks on mosques and synagogues.

Christopher Ringrose, 34, Marco Pitzettu, 25, and Brogan Stewart, 25, believed a race war was imminent and were preparing to use more than 200 weapons, including machetes, swords, crossbows and an illegal stun gun, a jury at Sheffield Crown Court heard.

Ringrose had also 3D-printed most of the components for a semi-automatic firearm and was trying to get the remaining parts at the time of his arrest.

The trio were arrested after undercover officers who had infiltrated their online group believed an attack was imminent, the court heard.

They are not believed to have met in the real world until they appeared together in the dock.

The nine-week long trial heard the group idolised Adolf Hitler and the Nazis, shared racist slurs and glorified mass murderers.

On Wednesday a jury found Ringrose, Pitzettu and Stewart guilty of a charge of preparing acts of terrorism and charges of collecting information likely to be useful to a person preparing or committing an act of terrorism.

It rejected claims the defendants were fantasists with no intention of carrying out their threats.

Ringrose was also convicted of manufacturing a prohibited weapon and Pitzettu pleaded guilty to obtaining an illegal stun gun at a previous hearing.

The judge, Mrs Justice Cutts, told them: “You must all expect substantial custodial sentences”.

The defendants will be sentenced on 17 July.

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