Poland’s government defied the European Commission’s challenge to its commitment to the rule of law, rejecting Brussels’ requests to address the constitutional court crisis in the country as “groundless.”

Prime Minister Beata Szydło said Thursday that her Law and Justice government would not “introduce into the Polish legal system any recommendations that are incompatible with the interests of the Polish state, which are not compatible with the interests of Polish citizens,” Polish media reported.

Poland’s Foreign Affairs Ministry said in a statement that in the dialogue with the Commission, “we have assumed that our cooperation will be based on such principles as objectivism, or respect for sovereignty, subsidiarity, and national identity.”

However, the statement added, “we have gradually come to realize that interferences into Poland’s internal affairs are not characterized by adherence to such principles.

“On top of that, such actions are largely based on incorrect assumptions which lead to unwarranted conclusions,” the ministry said.

In a letter to the Commission that was leaked to TV channel tvn24, the Polish government wrote that the country “was counting on an objective and balanced dialogue with the European Commission and with regret notes that these standards weren’t followed.”

Poland declined to apply the Commission’s recommendations on its constitutional court reform.

On Friday, the Commission confirmed it had received the letter from the Polish government. Margaritis Schinas, the Commission spokesman, said the institution would now consider the content of the letter and “assess the situation in due course.”

In July, Warsaw issued a new law to alleviate the Commission’s concerns over a controversial reform of the constitutional court. But the Commission said Poland had not done enough and there was a “systemic threat to the rule of law” in the country.

The Commission therefore gave Poland a three-month deadline to comply with the EU’s democratic requirement. The move marked a new phase in the Commission’s probe of the rule of law in Poland, which could end in Warsaw having its voting rights suspended.

Maïa de la Baume contributed to this article.