German police have raided sites across the country linked to a banned far-right group, weeks after a suspected extremist shot dead nine people of migrant backgrounds.

When Hashem Abedi was found guilty of planning the Manchester Arena bombing with his brother Salman, he became the latest home-grown terrorist to be convicted in a UK court. But he was also the product of a small area dubbed a “breeding ground” for extremists.

The dissident father of the Manchester Arena bomber, who was arrested in Libya the day after the blast alongside his other terrorist son, was quietly released without charge and has vanished.