Section 549 of the Code of Criminal Procedure, 1898, provides the procedure for the delivery of persons liable to be tried by a court-martial to the military authorities. It ensures that the jurisdiction of military courts is respected when an offence is committed by a person subject to military law.

Section 63 of the Code of Criminal Procedure (CrPC) explicitly states that no person who has been arrested by a police officer shall be discharged except on their own bond, or on bail, or under the special order of a Magistrate. This provision serves as a safeguard against arbitrary release or detention, ensuring that the judicial process oversees the liberty of the accused after an arrest.

Section 154 of the Code of Criminal Procedure, 1898, mandates that information regarding the commission of a cognizable offence, if given orally to an officer in charge of a police station, must be reduced to writing. This is commonly referred to as the First Information Report (FIR), which serves as the foundational document for initiating criminal investigations in Pakistan.

Section 157 of the Code of Criminal Procedure mandates that when an officer-in-charge of a police station receives information regarding the commission of a cognizable offense, they must send a report to the Magistrate empowered to take cognizance. However, the statute also specifies that in certain circumstances, this report is routed through or submitted to a superior officer of police as designated by the Provincial Government to ensure administrative oversight.

The First Information Report (FIR) is a document that records the initial information provided to the police regarding a cognizable offense. Under the law, the person who provides this information, known as the informant or complainant, is required to sign the document after it has been read over to them. This signature serves as an acknowledgment of the accuracy of the recorded statement provided to the police authorities.

Exhumation for autopsy is primarily a tool in criminal investigations to determine the cause of death. However, it can also be ordered in civil cases, such as inheritance disputes or insurance claims, where the cause of death is a material fact. Thus, the practice is applicable to both categories depending on the legal necessity.

Modern investigative procedures allow law enforcement agencies, including the Superintendent of Police, to collect digital evidence such as mobile data, telephone records, and identification documents (CNIC) to establish links between suspects and the commission of criminal offences during the investigation phase.

According to the Good Conduct Prisoners Probational Release Rules, the Parole Officer is required to submit the final release statement one month prior to the scheduled release date to ensure administrative processing and verification of the prisoner's conduct.

Section 151 of the Code of Criminal Procedure provides preventive powers to police officers. It allows an officer to arrest a person without a warrant or a Magistrate's order if the officer receives information or has reason to believe that the person intends to commit a cognizable offense, provided that the commission of the offense cannot be otherwise prevented.

The primary legal and medical purpose of a post-mortem examination (autopsy) is to scientifically determine the cause of death, which is essential for criminal investigations and legal proceedings, although age determination may be a secondary incidental finding.