Lawyers for Lance Armstrong say the Justice Department has joined a lawsuit against the cyclist. The lawsuit alleges the former Tour de France champion concealed his use of performance-enhancing drugs for over a decade and defrauded his long-time sponsor, the U.S. Postal Service.

The suit the Justice Department is joining was filed in 2010 by former teammate Floyd Landis, who was stripped of his 2006 Tour de France title for doping.