Tusk said he does not believe in the possibility of cooperation with the opposition. Earlier, the Polish opposition party Law and Justice held a protest in Warsaw after the detention of the country's former Interior Minister Mariusz Kaminski and his deputy Maciej Wonsik.
In December, Tusk fired the heads of the nation's five intelligence services on his first day in office. The prime minister added that, for his part, he is ready to cooperate with the opposition.