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Arson and Explosives Analysis

This division investigates cases involving arson, adulteration, dowry deaths, and offenses under the Explosive Act and related IPC sections. Analysis includes examining inflammable petroleum products, solvents, explosives, residues after explosions, and materials from dowry death and arson scenes.

Required Documents

  • FIR copy or complaint report
  • Seizure memo for collected materials (e.g., debris, residues)
  • Site sketch and photographs of the crime scene
  • Expert requisition letter from Investigating Officer
  • Relevant IPC/Explosive Act sections noted


Ballistics Examination

Handles crimes such as murder, attempted murder, suicide, accidental fire, and armed robbery. The examination covers firearms and their components, cartridges, bullets, gunpowder, and marks left by projectiles, including country-made weapons and those covered under the Arms Act.

Required Documents

  • FIR and seizure memo
  • Requisition letter from investigating authority
  • Crime scene sketch and photos
  • Medical report or postmortem (if applicable)
  • Firearms license copy
  • Weapon, cartridges, bullets sealed and labeled properly


Biological Evidence Analysis

Focuses on crimes like rape, murder, suicide, burning, drowning, abduction, and wildlife offenses. Examines biological samples such as semen-stained cloth, swabs, hair, saliva, bones, teeth, blood, and botanical or zoological materials like seeds, fibers, animal parts, and narcotic plants.

Required Documents

  • FIR and medical/MLC reports
  • Seizure memo of biological samples
  • Sample forwarding letter from authorized officer
  • Consent form or chain of custody document
  • Victim/suspect reference samples


Cyber Forensics

Investigates cybercrimes, e-commerce fraud, social media offenses, and crimes related to national security, hacking, and intellectual property. Examines digital evidence from computers, laptops, mobile devices, storage media, ATMs, POS machines, and software for data tampering, deletion, and authentication.

Required Documents

  • FIR or CyberCrime Complaint
  • Request letter from concerned police authority
  • Seizure memo of digital devices
  • Login credentials
  • Hash values
  • Details of suspected activity and timeframe


Chemical Analysis

Deals with cases involving illicit liquor, toxic liquor tragedies, corruption, forgery, acid attacks, and adulteration. Analyzes substances like country-made and foreign liquor, adulterated fuels, acids, burnt cloth, soaps, and detergents.

Required Documents

  • FIR and seizure memo of chemical substances
  • Expert examination request from competent authority
  • Sample labeling and preservation details
  • Photos or sketch of source location
  • Related case reports


DNA Profiling

Used in investigations of murder, rape (including gang rape), disputed paternity, identification in bomb blasts, terrorist attacks, and human trafficking. Examines body f luids, tissues, bones, teeth, and remains from decomposed or destroyed bodies for DNA evidence.

Required Document

  • FIR, postmortem report
  • Seizure memo of biological samples
  • Consent form for DNA testing
  • Chain of custody certificate
  • Reference samples from relatives


Document Examination

Examines cases of forgery, cheating, scams, ransom, and copyright violations. Analyzes handwriting, signatures, cheques, property documents, ink, paper, fake currency, and official documents like licenses, passports, and certificates for authenticity and alterations.

Required Document

  • FIR or complaint related to forgery, cheating, etc
  • Original and suspected documents
  • Seizure memo and forwarding letter
  • Known specimen writings/signatures
  • Stamp/seal reference samples


Polygraph Testing

Conducts lie detection tests to verify statements of suspects, witnesses, or complainants in cases of fraud, burglary, theft, arson, and murder, helping to ascertain the truthfulness of testimonies.

Required Document

  • FIR copy and summary of case
  • Voluntary consent form from subject
  • Medical fitness certificate
  • Application from investigating agency
  • Identification documents of subject


Physical Evidence

Covers vehicle theft, burglary, robbery, kidnapping, accidents, industrial disasters, and material adulteration. Examines vehicles, glass, paint, soil, tool marks, fibers, clothes, registration plates, building materials, and voice identification.

Required Document

  • FIR and seizure list of physical evidence (glass, paint, tools, etc.)
  • Sketches/photos of crime scene
  • Expert requisition letter
  • Chain of custody and sealing details
  • Relevant accident or inspection reports


Forensic Photography

Provides crime scene photography, specialized and trick photography, and photo matching. Examines photographs for authenticity in identity cards, stamp papers, and property documents

Required Documents

  • Requisition letter specifying purpose of analysis
  • Original and suspect photographs/documents
  • FIR or complaint copy
  • Sample/reference images


Narcotics Analysis

Handles cases involving narcotic and psychotropic substances under NDPS and Excise Acts. Analyzes drugs like opium, heroin, cannabis products, cocaine, and prohibited chemicals used in drug manufacturing.

Required Documents

  • FIR and seizure memo of suspected drugs
  • Requisition letter under NDPS/Excise Act
  • Sample sealing certificate and labelling details
  • Quantity, batch, and packaging information
  • Chain of custody report


Serological Examination

Used in serious crimes like murder, rape, and violent offenses, as well as wildlife and bovine conservation cases. Examines body fluids (blood, semen, saliva), tissues, bones, and traces on weapons and other evidence for serological analysis.

Required Documents

  • FIR and medical/postmortem report
  • Seizure memo of body fluid samples (blood, semen, etc.)
  • Chain of custody and sample labeling
  • Request letter for serological analysis
  • Reference samples from victim/suspect (if available)


Toxicological Analysis

Investigates suspected poisoning in murder, suicide, robbery, accidental deaths, and animal poisoning cases. Analyzes visceral organs, blood, urine, vomit, suspected poisons, spurious liquor, narcotics, and insecticides.

Required Documents

  • FIR and postmortem/medical report
  • Seizure memo of viscera or suspected poison
  • Chain of custody document
  • Request for toxicology examination
  • Any Prior Treatment/hostital records


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