Norway's Edvald Boasson Hagen of the Dimension Data team took the leader's golden jersey after winning the Tour of Qatar's third stage Wednesday. Boasson Hagen won the 11.4km time-trial around the Lusail circuit in 13min 26sec, finishing 25sec ahead of Dutch rider Jos Van Emden, with Italian Manuel Quinziato in third, a further 4sec adrift. Cavendish could only finish seventh, at 44sec, and now sits 26sec behind his teammate in the overall standings. Hagen, 28, said: "I feel stronger than last year and with luck I am. I succeeded in winning today, now I'll try to keep hold of the golden jersey." Thursday's fourth stage is a 189km ride from Al-Zubarah Fort to Madinat Al-Shamal. UCI considers testing all bikes International Cycling Union President Brian Cookson said Tuesday his organization will leave no stone unturned in the bid to rid the sport of cheats. Speaking during a visit to Doha where the Tour of Qatar is ongoing, Briton Cookson said the UCI would even consider expanding the tests for motorized bicycles if need be. "If we need to go to a situation where every bike has to be pre-examined before a race, including the bikes on the team cars, then maybe this is something that we have to look at," he said. "We have much better technology now to check whether there are any suspicious signs and then we can do the more invasive tests to prove it one way or another." The issue of motorized bicycles — or technological doping as it is sometimes called — has come to the fore since Belgian rider Femke Van Den Driessche's bike at the recent cyclo-cross world championships was found to have a hidden motor. Cookson, who was checking out facilities in Doha ahead of the world road race championships in the desert city in October, said he could not comment specifically on that case but insisted the UCI is doing everything it can to weed out the cheats.