The 2012 Tour de France began on 30 June, and stage 10 occurred on 11 July. The 2012 edition began with a prologue – a short individual time trial stage – where each member of the starting peloton of 198 riders competed against the clock – in Liège, Belgium with two more stages held in the country before moving back into France. The race resumed in Orchies for the start of the third stage; also during the first half of the race, the peloton visited Switzerland for the finish to the eighth stage in Porrentruy, and contested another individual time trial stage – having returned to France – the following day. Fabian Cancellara held the lead of the race throughout its opening Belgian leg; having won the race-commencing prologue, Cancellara defended it on the following two stages before the race returned to France. Cancellara maintained his overall lead for the rest of the race's first week, before eventually losing time on the first true mountain stage of the race – stage seven – as he was dropped on the closing climb to La Planche des Belles Filles. As a result, Bradley Wiggins assumed the maillot jaune, becoming the first British rider to wear the jersey since 2000. Wiggins maintained the lead for the following three stages, including his first victory at the Tour during the ninth stage individual time trial in Besançon. Wiggins held a lead of almost two minutes in the overall standings with the more mountainous second half of the Tour still to race. Two riders won multiple stages during the first half of the race; Peter Sagan, in his first Tour de France, won three stages and also held the lead of the points classification, while André Greipel took back-to-back stage victories on the fourth and fifth stages. World champion Mark Cavendish achieved one stage victory, while French riders Thibaut Pinot and Thomas Voeckler each took breakaway victories. The race was also marked by several large crashes, most notably on the sixth stage, when the majority of the field crashed with around 25 km (15.5 mi) remaining. In total, twelve riders had to abandon the race due to injuries suffered during the crash. During the race's first rest day – held after the ninth stage individual time trial – the team hotel of the Cofidis squad, in Bourg-en-Bresse, was searched by French police and gendarmerie. One of team's riders in the Tour, Rémy Di Gregorio, was arrested in relation to an ongoing anti-doping case, and was immediately suspended by the French team; although the case had been open since 2011, when Di Gregorio was a member of the Astana team. (en)