In 1926, during the Dictatorship of Primo de Rivera, he was elected Regional General Secretary of Asturias, León and Palencia and edited the Confederation's publication, "Solidaridad". That same year he was replaced at the head of the CNT National Committee by Juan Peiró, after Segundo Blanco was arrested and tortured in December 1926 by Commander Lisardo Doval, who gained infamy in the repression of the Asturian Commune. It was his first admission to prison, being imprisoned again in 1931 and 1934.