According to The Times, the purge has mostly targeted officers in the FSB’s Service for Operational Information and International Communications, which is informally known as the Fifth Service of the FSB. As intelNews has previously explained, the FSB’s Fifth Service was established in 1992 in order to fill the vacuum created by a host of no-spy agreements between Moscow and the governments of former Soviet Republics. These agreements prevent Russia’s Foreign Intelligence Service (SVR) from spying inside the territories of former Soviet states.

By 1995, the Fifth Service had become known as the “foreign spy wing” of the FSB. It grew in size drastically after 1999, and some claim it “graduated into [Russian President Vladimir] Putin’s imperial gendarme”. Today, the Fifth Service is reportedly in charge of Kremlin’s “kill list” of Ukrainian senior officials and other dissidents who live in Ukraine. Until recently, the Fifth Service was led by Sergei Beseda and Anatoly Bolyukh (or Bolukh).

However, The Times claims that both officials have been dismissed from their posts in recent weeks. Initially, the Russian government claimed that Beseda had embezzled funds, and placed him under house arrest. He has since been transferred to a prison, according to the paper, and has now been formally charged with misinforming the Kremlin about the conditions on the ground in Ukraine. Bolyukh has been dismissed from his post but is reportedly not in prison. His current whereabouts remain unclear.