YouTube Lecture Notes — Criminal Investigation & Procedures — Criminology

Source

Playlist: https://www.youtube.com/playlist?list=PLQe8ZUZBIxt-X1qRVwO8XUck3IeCuUVZE

Notes extracted from the CSS Criminology YouTube lecture series covering Criminal Investigation & Procedures, Intelligence Operations, Database Investigation, Forensic Investigation, and Electronic Investigation. Compiled from academy notes (NOA, JWT, Near Peer).

Lecture Notes — What is Investigation?

Literal/Latin root: "investigare" — to search into
Black's Law Dictionary: to inquire into a matter systematically, and to make a suspect the subject of criminal inquiry
CrPC 1898, Section 1 (definitions clause): "investigation" includes all proceedings under the Code for the collection of evidence, conducted by a police officer or by any person (other than a magistrate) authorized by a magistrate in this behalf

Objectives of Criminal Investigation

Prove or disprove that a crime was committed
Reconstruction of the incident (rebuild the crime scene to guide evidence collection)
Determine the method of committing the crime
Disclosure of motive (once the "how" is known, establish "why")
Locate and identify the suspect(s)
Locate, document, and preserve evidence from the crime scene
Recover stolen property connected to the victim/crime scene
Build a sound criminal case for trial (prepare the challan/charge-sheet)

Guidelines/Ethical Principles for Investigators

Exercise of legal power should not be oppressive and must be proportionate to the crime — contrasted with the early Classical School era, when legal power was often oppressive and disproportionate
Investigations should be carried out as transparently as possible
Investigators should take reasonable steps to understand the particular needs of individuals being investigated
Particular regard must be given to vulnerable people, women, and children — whether victim, suspect, or family members
Investigators must respect the professional ethics of others involved (e.g. suspects' families, peer groups, colleagues) and not compromise their basic human rights

Methods Used in Criminal Investigation

Interviews (primary means of evidence collection)
Analysis of physical evidence
Crime-scene photography (crucial since crime scenes deteriorate/change quickly)
Background checks, document searches, and interrogation

Lecture Notes — Preliminary Investigation

The first-response investigation conducted by police agencies immediately after a crime is reported
Steps: attend the crime scene; validate the information received; secure/cordon off the area (e.g. police tape); check if immediate danger still exists; identify possible witnesses; conduct preliminary interviews; arrest the suspect if present; take a dying declaration if the victim is critically injured; ensure the victim gets medical care; brief the investigator upon arrival; conduct an inventory of evidence taken from the crime scene

Lecture Notes — Modern/Advanced Investigation Techniques

Intelligence Operations

Intelligence is the process by which government, military, business, or other organizations systematically collect and evaluate information for the purpose of discovering the capabilities and intentions of adversaries/rivals
Purpose: fundamentally preventive — to stop an attack, war, or action by non-state actors before it happens; reveals both what rivals are planning and what their own internal weaknesses are
Law-enforcement agencies routinely receive information from a broad range of sources; this raw information is then subjected to a process of evaluation: first verifying it serves an intended purpose, then assessing the reliability of the information and its source
Only after passing this evaluation does raw information become criminal intelligence
The Intelligence Cycle (per UNODC): Collection → Evaluation → Collation → Analysis → (Further Development) → Dissemination
A related cycle (OSINT cycle): Direction/Planning → Collection → Processing/Collation → Analysis/Integration → Production and Dissemination
Intelligence-Led Policing (ILP): a model where policing/law-enforcement agencies base operational decisions on information supplied through intelligence operations — particularly emphasized as a model for policing organized crime (Pakistani agencies' role, e.g. ISI/IB coordination with police, can be discussed here)

Forensic Investigation

Definition: forensic science is the use of scientific methods and experts to investigate crime and examine evidence that may be presented in a court of law
Universe of disciplines under forensic science: fingerprint and DNA analysis, forensic anthropology (skeletal/decomposed remains), wildlife forensics, and more — not limited to "bio-forensics" alone
Also includes computer forensics, forensic dentistry (odontology), entomology (insects), and other specialized sciences
Overlaps with disciplines including biology, chemistry/natural sciences, physics (instrument analysis, pattern interpretation), crime-scene/death investigation, and digital/multimedia forensics
Examples of sub-fields: document examination (fingerprint pattern interpretation), toxicology/chemistry (drugs, gunshot residue, geological materials, fire debris and explosives analysis), digital/multimedia forensics (mobile phone search history), ballistics (gunshot residue/powder revealing firing distance, bullet/weapon matching)

Electronic (Digital) Investigation

The use of electronic devices to help in a criminal investigation — also called digital investigation or digital forensics
Process: preservation, identification, extraction, and documentation of computer evidence that can be used by a court of law
Definition: the science of finding evidence from digital media such as a computer, mobile phone, server, or network
Sub-types: computer forensics, mobile forensics, social-media forensics, email forensics, database forensics, and network forensics

Database Investigation

A database is an organized collection of structured information, typically stored electronically on a device
Database investigation is the use of such structured information for solving crimes
Examples of key Pakistani databases used in investigation:
- NADRA — holds every citizen's name, age, gender, and residential address, usable to trace individuals via their national ID
- Criminal records — held by police
- Fingerprint records — held by investigation departments/forensic laboratories
- Facial recognition databases — store facial data on record; a suspect's captured image/CCTV grab can be matched against the database to identify them
- DNA profiling databases, vehicle registration records, weapon licensing records
DNA Profiling: described as a state-of-the-art (advanced) procedure that can identify an individual based on their unique genetic makeup — unlike visible traits (eye/hair color) which can be shared, DNA is unique to each individual, making DNA profiling a powerful identification tool

Past Paper Angles

"Define investigation and discuss its key objectives."
"Discuss the ethical guidelines governing criminal investigation."
"Explain the role of intelligence operations and the intelligence cycle in criminal investigation."
"Discuss forensic and digital investigation techniques and their role in modern criminal justice."

🎥 YouTube Lecture Notes — Criminal Investigation & Procedures