In 1983, Rocco Chinnici was killed by a bomb in his car. His place in the Antimafia Pool was taken by Antonino Caponnetto. The group pooled together several investigations into the Mafia, which would result in the Maxi Trial against the Mafia starting in February 1986 and which lasted until December 1987. A total of 475 mafiosi were indicted for a multitude of crimes relating to Mafia activities. Most were convicted and, to the surprise of many, the convictions were upheld several years later in January 1992, after the final stage of appeal. The importance of the trial was that the existence of Cosa Nostra was finally judicially confirmed.