President Karol Nawrocki, who is backed by PiS, has now entered the constitutional court, according to his chief of staff.

Nawrocki cancelled a trip to Senegal mid-air in order to attend to the confrontation in Warsaw. He had been on his way to the Summer Youth Olympic Games in Dakar.

Riot police were deployed to prevent any demonstrators from entering the court building.

In a social media post, the Constitutional Court wrote that the two judges the government wants to prosecute were still the legally appointed senior justices of the court.

"All persons participating in these actions are committing the crime of a coup d'etat," it said.

In a social media post, Tusk wrote: "Restoring the rule of law is our duty. After years of Law and Justice's lawlessness, this is a difficult, sometimes painful process that requires decisive action.…