Background
Colombo was born on 23 June 1946 in Briosco.
Colombo was born on 23 June 1946 in Briosco.
Università Cattolica del Sacro Cuore.
He obtained a degree in Jurisprudence from the Università Cattolica del Sacro Cuore in Milan in 1971. Colombo had a 33-year long career as magistrate in Milan. He worked amongst others on the cases of the 1979 murder on advocate Giorgio Ambrosoli, the Propaganda Due Freemason lodge, and off the books money at the Istituto per la Ricostruzione Industriale.
Together with Giuliano Turone he investigated the finances of Michele Sindona.
In the 1990s Colombo was one of the judges in the Mani pulite political corruption investigation in Italy. He resigned from the judiciary in 2007 even though he could continue as a judge for another fourteen years.
He cited that the fight against corruption should not only be held in the legal arena as reason.
He was a member of the Court of Cassation between 2005 and 2007.