Five frescoed stone slabs stolen from a tomb in the ancient city of Paestum and trafficked by a notorious artefact smuggler went on display in Italy on Thursday after a 10-year investigation. A police squad dedicated to tracking down art and artefacts dug up illegally from Italy's numerous ancient sites traced the slabs to the Italian-Swiss border and brought them to Rome. Paestum, a ruined city near Naples originally founded by the ancient Greeks, boasts hundreds of unique ancient tombs.