Russia’s Federal Security Service (FSB) has arrested two individuals suspected of spying for Poland in the western Russian exclave of Kaliningrad, accusing them of collecting sensitive information about Russian military personnel and facilities and passing it to Polish intelligence.
In a statement issued on Wednesday, November 11, the FSB said the suspects had gathered and transmitted information concerning personnel and installations belonging to Russia’s Defense Ministry, as well as other intelligence-related information collected within the strategically important Baltic Sea region.
The agency did not disclose the nationalities or identities of the two individuals. It said criminal espionage cases had been opened against them and that both suspects would remain in custody as investigations continued.
The FSB also announced that seven Polish citizens and three Russian citizens had received formal warnings over their alleged contacts with Polish intelligence services. However, the agency did not provide further details about the individuals, the nature of their contacts or the circumstances surrounding the warnings.
Poland has rejected the Russian security agency’s allegations, describing the arrests as another attempt to create tensions between the two countries.
A spokesperson for Poland’s minister-coordinator of special services characterized the FSB’s actions as “yet another provocation and act of disinformation,” dismissing the Russian announcement.
The latest arrests come amid deteriorating security relations between Russia and Poland, which has emerged as one of Ukraine’s strongest supporters since Moscow launched its full-scale invasion in February 2022.
The announcement also came just one day after Polish authorities arrested two Ukrainian citizens suspected of conducting espionage and sabotage activities on behalf of Russia.
The two Ukrainian nationals were accused of carrying out operations linked to Russian intelligence interests, although further details about the alleged activities and their targets were not immediately available.
The developments highlight the increasingly complex intelligence environment across Eastern Europe, where accusations of espionage, sabotage and covert operations have become a growing feature of the confrontation between Russia and Western-backed countries.
Kaliningrad occupies a particularly sensitive position in Russia’s security and military strategy. Located on the Baltic Sea between Poland and Lithuania, the heavily militarized exclave is geographically separated from mainland Russia and shares borders with two NATO member states.
The territory hosts important Russian military infrastructure, including naval facilities associated with the Baltic Fleet, air-defense systems and other military installations. Its location makes it strategically significant for Moscow’s military presence in the Baltic region and its broader confrontation with NATO.
Poland, meanwhile, has significantly strengthened its military capabilities and security arrangements along its eastern and northern borders, citing the threat posed by Russia’s war against Ukraine and concerns about potential Russian intelligence activities.
The latest FSB allegations, if substantiated, would involve the collection of information about military personnel and facilities in one of Russia’s most strategically sensitive regions. However, Moscow has not publicly presented evidence supporting its accusations, and Poland has rejected the claims.
The arrests reflect a broader intensification of Russia’s domestic security crackdown since the beginning of its full-scale invasion of Ukraine.
Russian authorities have increasingly pursued individuals suspected of espionage, treason and cooperation with foreign intelligence agencies, with both Russian nationals and foreign citizens facing prosecution.
According to calculations by the Russian human rights monitoring organization OVD-Info, the number of Russian citizens and foreigners prosecuted for espionage in 2024 was almost ten times higher than a decade earlier.
The increase has raised concerns among human rights organizations about the expansion of security-related prosecutions and the use of espionage and treason charges against individuals accused of maintaining contacts with foreign governments or organizations.
Foreign journalists and other foreign nationals have also faced heightened scrutiny from Russian security agencies.
In October, the FSB arrested Japanese journalist Yuki Imai on Sakhalin Island in Russia’s Far East, accusing him of espionage. Imai was working as a correspondent for Japan’s Hokkaido Shimbun newspaper in the regional capital, Yuzhno-Sakhalinsk.
The arrest added to concerns about the operating environment for foreign journalists in Russia, where reporting and professional contacts involving sensitive political, military and security matters have increasingly attracted scrutiny.
The latest arrests in Kaliningrad underscore the continuing deterioration of relations between Moscow and Warsaw and the growing importance of intelligence operations in the wider Russia-West confrontation.
With Poland strengthening its defense posture and Russia expanding its counterintelligence operations, allegations of spying and sabotage are likely to remain a significant source of diplomatic and security tensions across the Baltic region.
