The Korean prosecution service logo is seen on a door at the Seoul Central District Prosecutors' Office in Seoul's Seocho District, Wednesday. Yonhap

The ruling Democratic Party of Korea (DPK) on Thursday was set to push for the passage of a bill that would strip the prosecution of its direct investigative powers despite protests from the main opposition party.

The DPK seeks to pass the amendment to the Criminal Procedure Act during a plenary session scheduled for 2 p.m.

If approved, the revision would strip the prosecution of its authority to conduct direct investigations, including supplementary investigations.

The DPK has been pushing ahead with prosecution reform legislation that calls for dismantling the prosecution and creating two new agencies, each tasked with handling investigations and indictments.