WARSAW, Poland (AP) — Poland's opposition said Thursday that a new law that gives the justice minister power over prosecutors spells the end of independent investigations and ushers in an era of politically-driven inquiries.

Prime Minister Beata Szydlo, however, insisted the law aimed to restore people's trust in the justice system.

"Very often we hear the opinion that criminals get special treatment and privileges," Szydlo said. "Under the new regulations ... those who violate the law and who are dishonest will be effectively and justly prosecuted and judged."

The law, which takes effect Friday, was introduced by Szydlo's conservative Law and Justice government, which is making sweeping changes to state offices and businesses. It gives the justice minister influence over every investigation because it joins his office with that of the chief prosecutor. It also puts more stress on fighting tax evasion and financial crimes, as the government seeks funds for its generous program of social benefits.

The opposition says the move unfairly gives the Polish government power over vital investigations and says Justice Minister Zbigniew Ziobro has a reputation for being politically motivated.

"This is the end of the independence of the prosecutors' offices," said Krzysztof Brejza, an opposition Civic Platform party lawmaker.

Ziobro, who will now also be the nation's chief prosecutor, held both offices in 2005-07 and focused on prosecuting corruption and cronyism among political opponents.