Security officials have extinguished the Olympic torch for a second time amid heavy protests during the torch relay in Paris. Police have escorted the flame onto a bus, apparently to move it away from protesters. The flame was being carried out of a Paris traffic tunnel by an athlete in a wheelchair when it was stopped because protesters booed and began chanting "Tibet." It was the second time Monday that officials extinguished the torch amid protests. The procession was apparently being continued on board a bus.