Phases of DVI Operations

Phase 1: Scene Operations - Ground Zero Action

• Primary Goal: Meticulous recovery of human remains & associated evidence from the disaster site.
• Key Actions & Protocols:
  • Site Security: Establish and maintain a secure perimeter under BNSS provisions for crime scene protection.
  • Search & Recovery: Employ systematic grid patterns (or line, spiral) for thorough searching following 2024 NIJ Death Investigation Guidelines.
  • Tagging: Crucial for chain of custody under BSA evidence requirements. All remains and property receive a unique DVI number.
  • Documentation: Detailed notes, sketches, photography, and videography of remains in situ per BSA documentary evidence standards.
  • Temporary Mortuary: Set up a provisional facility if required for initial examination under BNSS procedural guidelines.
• Key Personnel On-Site:
  • Team Leader (coordinates all activities per INTERPOL DVI Guide 2023).
  • Recovery Teams (specialized in locating and retrieving remains).
  • Forensic Pathologists, Odontologists, Anthropologists (initial assessment).
  • Police (security, legal aspects under BNSS, evidence collection per BSA).
• Emphasis: Unbroken chain of custody for all recovered items under BSA evidence provisions.

⭐ All recovered human remains and associated property must be assigned a unique DVI number at the scene per INTERPOL DVI Guide 2023 standards. This is fundamental for traceability throughout the DVI process under BSA evidence requirements.

Phase 2: Postmortem Examination - Deceased Data Deep-Dive

This phase involves a meticulous examination of the deceased to gather all potential identifying data. All findings are documented on Interpol PM forms (Pink forms 📌 Pink for Postmortem).

Identifiers Collected:

• Primary Identifiers:
  • Fingerprints
  • Dental Records (Odontogram)
  • DNA profiles
• Secondary Identifiers:
  • Medical findings (e.g., surgical implants, healed fractures, scars)
  • Property or clothing found with the body
  • Photographs
  • Physical description (height, weight, hair/eye color)

Key Procedures:

• Full body X-ray / CT scan.
• Comprehensive photography of the body and any distinguishing features.
• Fingerprinting of the deceased.
• Detailed dental examination and charting.
• Autopsy: To determine cause and manner of death, and for collection of pathological samples.
• DNA Sample Collection: Typically bone (femur, rib), teeth, or deep muscle tissue.

⭐ Dental evidence is highly durable and often a primary means of identification due to its resistance to decomposition and trauma.

Phase 3: Antemortem Data Collection - Missing Persons Profile

Gathering detailed information on missing persons from relatives/friends for identification.

• Antemortem (AM) Data Sources:

  • Physical description: Height, build, hair/eye color, unique marks.

  • Photographs: Recent, various angles, smiling.

  • Medical history: Surgeries, implants, scars, tattoos.

  • Dental records: X-rays, charts, dentist details.

  • Fingerprints: If available.

  • DNA:

    • Personal items (toothbrush, hairbrush) - preferred.
    • Relatives (buccal swabs).
• Tool: Latest Interpol AM forms with 2024 guidelines (📌 Yellow forms: "Yellow for Yearning").
• Key Aspects: Trained interviewers following updated NIJ and OVW protocols, cultural sensitivity, family psychological support per current Death Investigation Guide 2024.

⭐ Antemortem DNA from personal items (e.g., toothbrush) is preferred over kinship samples if viable for a direct match, following National Protocol for Sexual Assault Medical Forensic Examination 2025 standards.

Phase 4: Reconciliation - The Identity Jigsaw

Systematic comparison of Postmortem (PM) and Antemortem (AM) data. Reconciliation Centre/Identification Board reviews matches, resolves discrepancies, makes final ID decisions.

• Process Flow:

• Identification Criteria:

  • Modern identification modalities include visual, contextual, fingerprint, medical or dental comparative radiography, and DNA.
  • The process is multidisciplinary and multi-stage, comparing antemortem data with postmortem evidence.
  • Forensic investigators apply comprehensive analysis to generate identification leads.
  • If primary methods are insufficient, forensic profiling methods provide investigative leads.

  ⭐ A positive identification is typically declared when there is a conclusive match with at least one primary identifier (DNA, fingerprints, dental) or a robust combination of secondary identifiers without any inconsistencies.

• Tools & Documentation:

  • Specialized DVI management systems and data comparison software.
  • The Interpol DVI Guide 2023 (Part A) outlines high-level reference material with extensive detailed information in Part B annexures accommodating jurisdictional legal system differences.

• Outcomes:

  • Issuance of death certificates under BSA provisions.
  • Notification of Next-of-Kin (NOK).
  • Release of remains per BNSS procedures.

High‑Yield Points - ⚡ Biggest Takeaways

• Scene Phase: Systematic recovery, tagging, and documentation of remains.
• Postmortem Phase: Forensic examination, dental profiling, fingerprinting, and autopsy.
• Antemortem Phase: Collection of missing person's data (dental records, DNA, medical records).
• Reconciliation Phase: Matching PM and AM data; identification confirmed by a board.
• Debriefing Phase: Psychological support for team and information release.
• Primary Identifiers (fingerprints, dental records, DNA) are crucial for positive ID.
• INTERPOL DVI guidelines ensure standardized international procedures.