I apologize in advance for the sauce, but it is what it is. Info is relevant.
The people who began chasing Snowden work for the Associate Directorate for Security and Counterintelligence, according to former U.S. intelligence officers who spoke on condition of anonymity. The directorate, sometimes known as “the Q Group,” is continuing to track Snowden now that he’s outed himself as The Guardian’s source, according to the intelligence officers.
https://www.thedailybeast.com/inside-the-q-group-the-directorate-hunting-down-edward-snowden