The police arrested a 22-year-old from Savona as part of an anti-terrorism operation in radical right-wing circles contiguous to supremacist terrorism.
The suspect is accused of having formed an association for the purpose of terrorism as well as having carried out propaganda and incitement to commit a crime for reasons of racial discrimination aggravated by denial.
12 searches are also underway against people close to the 22-year-old in the cities of Genoa, Turin, Cagliari, Forlì-Cesena, Palermo, Perugia, Bologna and Cuneo.