Mariusz Kaminski, a former interior minister, and Maciej Wasik, his ex-deputy, were detained by police officers at the Presidential Palace on Tuesday evening.
In December 2023, Kaminski and Wasik were sentenced to two years in prison for masterminding an anti-corruption provocation in 2007 when they were heading the Central Anti-Corruption Bureau (CBA).
Earlier on Tuesday, the police received documents containing an order issued by a Warsaw court to take both politicians into custody.
"In the Tusk-owned state, Civic Platform politicians charged with corruption are free, either in the Sejm, the lower house of parliament, or in the European Parliament," Mariusz Blaszczak, the head of the Law and Justice (PiS) parliamentary caucus, wrote.
"And PiS politicians, who have been fighting against corruption during their entire political careers, are being sent to prison," Blaszczak continued, adding that both politicians had been pardoned by the president and were still MPs.
Blaszczak also said that sooner or later members of the government would be brought to justice for what he called its illegal actions.
Another PiS MP, Jacek Sasin, claimed that Kaminski's and Wasik's detention is a coup d'etat which "will disgrace the Tusk regime for years."
According to Beata Szydlo, a PiS MEP, Kaminski and Wasik "were for years a symbol of the fight against corruption and other pathologies of the Third Republic of Poland."
"That is why they had become the target of hatred of pseudo-elites who used to to prey on Poland and the Polish people, and who want to continue," Szydlo said.
"They are the first political prisoners of the Tusk regime," the MEP added. (PAP)
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