The movement calling for Catalonia's separation from Spain has been a major challenge for the country for years, triggering its biggest political crisis in decades with a short-lived independence declaration in 2017.
During the registrations, police seized documentation and computer hardware as well as abundant substances considered precursors for the manufacture of explosives, susceptible to be used in the manufacture of devices, pending confirmation by specialists, police said.
Catalonia's independence is reaching a turning point with a verdict expected in the first half of October in the trial of 12 separatist leaders for their role in the 2017 independence referendum and declaration.
