After earlier accusing Turkey of conducting secret missions in refugee camps and other places in Greece to gather information about critics of the Turkish government and supporters of self-exiled cleric Fethullah Gulen, a site run by Turkish journalists and security experts said Turks living in Greece are also being spied on.

That was according to the Nordic Monitor website which said Turkey’s National Intelligence Organization (Milli Istihbarat Teskilat?, or MIT) expanded monitoring, illegal information gathering and surveillance in Greece, saying Turkey’s Embassy was involved.

The report said that was a blatant violation of international conventions according to what it said was newly-discovered secret documents that “expose expansive, clandestine and hostile activities conducted by Turkish intelligence and diplomats in a NATO ally country.”

It added the secret operations, going after Gulen and his supporters who Turkish President Recep Tayyip Erdogan said orchestrated a failed 2016 coup and assassination attempt against him, are challenging Greek national security interests.

The site posted a document stamped secret and dated Feb. 13 as part of a 39-page  intelligence brief identifying hundreds of Turkish citizens who took refuge in Greece to escape an unprecedented crackdown on critics by Erdogan who purged civil society, the judiciary, military and has jailed dozens of journalists.

Nordic Monitor claimed the document was signed by Erdogan Kartal, Deputy Head of the Counterterrorism Department at the Security General Directorate (Emniyet) in Ankara and distributed to dozens of Turkish provinces in a secret message for further police action against Turkish asylum seekers identified in the MIT intelligence.

Apparently fearing a leak, Kartal referred to the source of the intelligence as “the information note obtained from the affiliated (IV) institution.”

The Roman numeral IV is the code number for the notorious spy agency MIT, which employs huge financial and logistical resources to collect data on Erdogan’s opponents abroad and tries to mask the source, the website said.