Poland's presidency on Tuesday named a new acting head of the Supreme Court as Warsaw presses ahead with an overhaul of its judiciary that critics, including the EU, say undermines the rule of law in the ex-communist state.
Brussels, Poland's opposition parties and rights groups claim a raft of different reforms introduced by Poland's ruling Law and Justice (PiS) party amount to political interference in the judiciary.
Among the reforms is a reduction in the retirement age for judges from 70 to 65.
It affects 27 of the Supreme Court's sitting 73 judges, including chief justice Malgorzata Gersdorf, who was appointed in 2014 and is now aged 65.
She has refused to step aside, insisting that, under the constitution, her term runs until 2020.
Ignoring her objections, President Andrzej Duda's office on Tuesday named Dariusz Zawistowski as the court's new acting chief.
The outgoing judges were given the option of asking the president to prolong their terms and Duda's office said on Tuesday that five could indeed stay on.
Last month, the Supreme Court said it was suspending the forced early retirement until the European Court of Justice could weigh in on the matter.
But Duda's office responded by saying the suspension had no legal basis.
The reforms have put the PiS, which came into power in late 2015, at loggerheads with Brussels, which triggered Article Seven proceedings against the country in December in a move that could eventually see Warsaw's EU voting rights suspended.
And in July, Brussels launched so-called infringement proceedings against Warsaw, which could result in fines.
The PiS insists the judicial changes tackle corruption and overhaul a judicial system still haunted by Poland's communist era.