Russia's FSB security service said it arrested two people it described as Polish intelligence agents for allegedly gathering information about military facilities in the western Kaliningrad region, Interfax reported on Wednesday.
The FSB pressed espionage charges against the two individuals, according to a statement cited by Interfax. Espionage carries a maximum sentence of 20 years in prison.
It was not immediately clear whether the two arrested individuals were Polish, Russian or another nationality.
The FSB said it had also warned seven Polish citizens and three Russian nationals over what it said were their contacts with the Polish security services.
"The aforementioned Polish citizens have been barred from entering our country for an extended period," the FSB statement cited by Interfax read.
A spokesperson for the Polish minister in charge of special services said he would not comment on statements posted online by Russian intelligence services.
"On National Independence Day, I view them, in particular, as yet another provocation and an act of disinformation," the spokesman, Jacek Dobrzyński, wrote on X. Poland celebrates its Independence Day on Wednesday.
The Kaliningrad region is a Russian exclave on the Baltic Sea that borders Poland and Lithuania.
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