In 2003, the Antwerp Diamond Center in Belgium was robbed of over £62 million worth of diamonds. The Antwerp Diamond Center holds 160 underground vaults that are used to hold diamonds. In this robbery, 123 of the 160 vaults were emptied, by a group of burglars known as the School of Turin. An Italian businessman with supposed connections to the Sicilian Mafia, Leonardo Notarbartolo, was pinpointed as the chief planner and participant in a blatantly inside job in Antwerp. He was convicted after his arrest on the basis of mainly circumstantial evidence and is now in his sixth year of a ten-year sentence in prison. The diamonds have never been recovered.