The Italian investigation into the dispute between Lance Armstrong and Filippo Simeoni has led to PaPICTURE BY TIM DE WAELE On Thursday evening representatives of the Italian police force showed up at the Italian team's hotel in Pescantina to present Paolo Bettini with a summons to appear before the prosecutor in Lucca and the National Drug Squad (NAS) in order to give evidence about the dispute between Filippo Simeoni and Lance Armstrong that took place at the Tour de France, writes Susanne Horsdal. An investigation was opened in Italy after Armstrong chased down Simeoni during stage 18 to Lons le Saunier, effectively preventing the Italian from staying with a small group of riders who later disputed the stage win between them. The dispute between Armstrong and Simeoni stems from the ongoing case involving Armstrong's training consultant Michele Ferrari, who is accused of distributing banned substances to riders. Simeoni is one of the key prosecuction witnesses in that case, and has stated that he was administered drugs by Ferrari. The Lucca case, however, only concerns the situation at the last Tour. Kazakh rider Dimitry Fofonov, Spain's Juan Antonio Flecha and Dutchman Marc Lotz, who were all part of the aforementioned breakaway, will also be asked to testify.