The European Union's top court ruled Tuesday that there are reasons to question the independence of a new judicial chamber in Poland that monitors and potentially punishes judges.

However, the European Court of Justice left it to Poland's highest court to determine whether the new Disciplinary Chamber is independent of influence from the nations' legislative and executive powers.

In Poland, both sides of the heated dispute around the ruling party's controversial changes to the country's judiciary declared victory upon hearing the verdict.

The head of the Supreme Court, Malgorzata Gersdorf, said the EU court clearly shared concerns over the new chamber, which is part of the Supreme Court. She vowed action aiming to "restore trust" in Poland's top court and its judicial bodies.

The right-wing government, however, said the ruling, which referred the matter back to Poland's judges, was a clear sign that the EU court believes it has no jurisdiction to assess the justice systems of member nations. Poland's ruling Law and Justice party has been voicing that opinion ever since it started to introduce changes to the judiciary when it took power in 2015.

The EU court's ruling also implied there are questions about the independence of another top body in Poland, the National Council of the Judiciary, which proposes judges for court positions, including on the Supreme Court, and is supposed to protect their independence.