The revised guidelines on investigative procedures, which mandate a joint investigation unit of the police and prosecutors and require them to cooperate with each other in advance, have been criticized for being less practical and useful.

The revised source material proposes amendments to the investigation rules, aiming to streamline the joint investigation process and compulsory cooperation between prosecutors and police officers. These changes were made in preparation for the upcoming revision of the Criminal Procedure Act, set to take effect in October. However, concerns have been raised regarding the practicality and usefulness of these amendments, as they do not fully align with the objectives and principles of the investigation and court procedures.

The proposed amendments include the establishment of joint investigation teams and the appointment of dedicated prosecutors or investigators to assist in joint investigations. The rules also outline the need for prosecutors to request the assistance of investigators and allow for consultations between prosecutors and investigators, with a response timeframe of seven days.

However, legal experts argue that the seven-day deadline is too stringent and may hinder effective cooperation. They also argue that the amendments conflict with the spirit of the revised Criminal Procedure Act, which focuses on preventing over-reliance on prosecutors in investigations. Additionally, the amendments may complicate matters for specialist cases and violate the principle of separating investigators from those holding evidence.

As a result, legal experts believe that the effective cooperation between investigators and prosecutors is crucial to the successful implementation of the revised investigation rules.