 Li Causi became the PCI interregional secretary in Piedmont and Liguria, where he succeeded in producing clandestine copies of L’Unità and in helping organise rice workers’ strikes in Piedmont.He fled to Paris in mid-1927, but was arrested on May 10, 1928 in Pisa, during one of his clandestine return trips.Li Causi was sentenced to 20 years and nine months in prison.