Polish prosecutors investigate court head for abuse of power

In this April 28, 2016 photo, head of Poland's Constitutional Tribunal Andrzej Rzeplinski attends a meeting at the presidential palace in Warsaw, Poland. Polish prosecutors have opened an investigation into Rzeplinski to determine if he abused his power in not allowing judges appointed illegally by the ruling party to take part in rulings, what is the latest development in an ongoing conflict between the Polish government and the constitutional court. (AP Photo/Czarek Sokolowski) (The Associated Press)

In this Aug. 11, 2016 photo head of Poland's Constitutional Tribunal attends a session of the court in Warsaw, Poland. Polish prosecutors have opened an investigation into Rzeplinski to determine if he abused his power in not allowing judges appointed illegally by the ruling party to take part in rulings, what is the latest development in a ongoing conflict between the Polish government and the constitutional court. (AP Photo/Alik Keplicz) (The Associated Press)

In this April 28, 2016 photo, head of Poland's Constitutional Tribunal Andrzej Rzeplinski attends a meeting at the presidential palace in Warsaw, Poland. Polish prosecutors have opened an investigation into Rzeplinski to determine if he abused his power in not allowing judges appointed illegally by the ruling party to take part in rulings, what is the latest development in a ongoing conflict between the Polish government and the constitutional court. (AP Photo/Czarek Sokolowski) (The Associated Press)

Polish prosecutors have opened an investigation into the head of the country's Constitutional Tribunal to determine if he abused his power in not allowing judges appointed by the ruling party to take part in rulings.

The investigation into Andrzej Rzeplinski, which opened Thursday, is the latest development in an ongoing conflict between the Polish government and the constitutional court, whose role is similar to the U.S. Supreme Court.

The government's conflict with the court has raised international concerns about the state of democracy in Poland, and critics have slammed the investigation into Rzeplinski as an attack on the separation of powers.

Rzeplinski called the investigation part of a "hybrid war" against the tribunal and "a feeble attempt to interfere in the independence and autonomy of the judiciary."