The BBC article says” A judge has issued an arrest warrant for cyclist Floyd Landis for allegedly hacking into a French anti-doping agency laboratory computer”.
I read a previous story that said there was evidence that hacking had been traced back to a particular PC, the story was attributed to "sources close to the laboratory" whoever that may be.
I don't have much faith in this lab or the AFLD, they have had previous dealings with Lance Armstrong, which haven't helped their credibility at all, and now it appears that they have been sacked from this year’s TdF following a fall out with UCI/ASO.
Their director announced that it was an international arrest warrant against Landis, which also seems to be untrue, the devil is in the details.