I just heard from a reliable source that the federal authorities involved in this case have traced Michael Vick's cell phone records and put him at the scene of dogfights on specific times and dates over the past few years.  Authorities before have commonly used this method in other cases such as murder or kidnapping. 

They have also put him on the scene many times at the house in question, the one he said that he "rarely visits".

I got this confidentially and can not reveal my source, but it is credible breaking news on the Michael Vick story.