In 1969, following the "Osses case", a direct (non-fatal) operation acted by four militants of MIR in Concepción against the right-wing tabloid "Noticias de la Tarde", the Christian Democratic Party government used the incident to ban the MIR and begin persecution of its known leaders. The government publicized a national list of 13 young MIR leaders for their capture. Among them, all between 22 and 26 and with links to the University of Concepción, were Doctors Miguel Enríquez and Bautista van Schouwen, Professor Marcello Ferrada de Noli, medical student Luciano Cruz, sociologist Nelson Gutiérrez, lawyer Juan Saavedra Gorriategy, civil engineer Aníbal Matamala, and economist José Goñi (Goñi later became a Minister of Defense and ambassador of Chile in the USA). Some of them were captured after spectacular operatives coordinated by the central headquarters of the Chilean Political Police in Santiago, tortured, and imprisoned in the Cárcel of Concepción and in Santiago.