Investigation into Landis doping allegations 'could take years'

The investigation into allegations made by disgraced cyclist Floyd Landis is "significant" and of "great importance" but could take years, the World Anti-Doping Agency have said.

Landis, who was stripped of the 2006 Tour de France title after testing positive for testosterone, in May admitted to doping violations, despite previously having spent a lot of time and money protesting his innocence.