In 1973, Interior Minister Mariano Rumor was attacked by Gianfranco Bertoli, a self-described anarchist. Four were killed during the bombing, and 45 injured, while Rumor escaped alive from it. Bertoli was served a life-term in 1975. Bertoli was an informant of Sifar at the time, and was in the early 1990s linked to Operation Gladio. Court proceedings showed that this connection was one of mistaken identity.