Drug Crime Scene and Clandestine Laboratory Investigation Notes

Personnel and Institutional Context

• Speakers: DSP Satwant Singh s/o Karam Singh and ASP Madora Binti Mustafah.
• Department: Narcotic Division RMP Forensic Laboratory.

Crime Scene Definition and Evidence

• Crime Scene: Location of illegal acts where physical evidence is gathered by CSIs or forensic scientists.
• Drug Evidence:   - Drugs, precursors, reagents, solvents, and utensils.   - Cutting agents (adulterants/diluents), dyes, and acids/bases.   - Packing materials and method notes.
• Physical Evidence: Fingerprints, shoe/tyre prints, and soil samples.
• DNA Sources: Blood stains, hair, saliva (from cigarette butts), and sweat (from clothing, gloves, or masks).

Evidence Collection Rules

• Rule 1: Control: Assess safety hazards, define scene scope, establish cordons/guards, and maintain a log of all personnel entering/leaving.
• Rule 2: Process:   - Conduct initial safety assessments using PPE.   - Preliminary survey without disturbing evidence.   - Utilize search patterns and document the scene via photographs, sketches, and notes.
• Search Methods:   - Interior: Clockwise search from the entrance including unusual spots (refrigerators, under carpets).   - Exterior: Line, spiral, grid, zone, and vehicle searches.

Clandestine Drug Laboratories (Clan Labs)

• Definition: Facilities used for producing illegal drugs (e.g., Amphetamine, Metamphetamine, MDMA, and Heroin).
• Categories:   - Active: Chemicals/equipment in current use.   - Stored/Used: Equipment/chemicals previously used.   - Stored/Unused: Pre-operational.   - Used Site: Historical evidence or admission of lab activity.
• Indicators: High security, obliterated chemical labels, unusual odors (ether, acetone, ammonia), and discarded matchbooks with missing striker pads.
• Equipment: Professional glassware mixed with household items like $1$ or $2\,dm^3$ bottles, coffee filters, and blenders.

Stages and Hazards of Clan Labs

• Operational Laboratory: Most dangerous stage (synthesis/"cooking"). Risk of toxic gas release, fires, or explosions.
• Non-Operational Laboratory: Set up for a cook or just finished; contains unstable residues and contaminated glassware.
• Boxed Laboratory: Dismantled and mobile to avoid seizure; often stored in lockers or vehicles.
• Primary Hazards: Fire, explosions (chemical reaction with air/water), chemical burns from acids, and lethal gases such as phosphine and phosgene.

Chemical Classification and Dangerous Goods

• Precursor: Raw material that becomes part of the finished drug.
• Reagent: Reacts chemically but is not part of the final product.
• Solvent: Used to dissolve, dilute, or purify; does not react chemically.
• Dangerous Goods Examples:   - Flammables: Petrol, Kerosene, Acetylene, and LPG.   - Toxics/Corrosives: Nitrogen Dioxide ($NO_2$), Calcium Cyanide, $HCl$, and $NaOH$.   - Reactives: Calcium Carbide and various Peroxides.

Accidental Discovery Protocol

1. Leave all items as found; contact the Clandestine Laboratory Response Team.
2. Do not toggle electrical switches or water services (water is often required to cool active reactions).
3. Stay upwind and uphill.
4. Remove all persons and isolate the scene.