Almost a year since former NSA contractor Edward Snowden's leaked information was first revealed to the world, US officials today confirmed to CNN a new leaker is responsible for providing additional secret documents to The Intercept. The Intercept is an investigative website cofounded by Glenn Greenwald, the reporter to whom Snowden entrusted the bulk of his documents, and it has recently been publishing a series on the inner workings of the US government's terror watch list. Just today, The Intercept published a new article based on leaked information indicating that 40 percent of the 680,000 total people listed on the watch list have "no recognized terrorist group affiliation."

The documents, which The Intercept reported were leaked by someone within the intelligence community, further show that the separate "no fly" list banning people from air travel has expanded under President Obama to include 47,000 names, the highest number since the list was created in 2001. The new information raises the question of why 280,000 names remain on the terrorist watch list if there isn't evidence linking them to specific terror groups. Are all of these people potentially homegrown terrorists, or are they part of groups that the government hasn't identified yet, or perhaps they have shown interest in terror groups but haven't joined them?