Emballez-les « tels quels » et transmettez-les aux SNLJ. Les criminels forcent souvent les coffres-forts en en coupant les parois. Les exceptions comprennent :. En consultation avec le procureur de la Couronne, remplissez le formulaire de demande de divulgation. Pour de plus amples renseignements, communiquez avec la BNDG.
This guide assists police investigators with the collection, preservation, and shipping of physical evidence to the RCMP's National Forensic Laboratory Services NFLS , which operates as a single public laboratory system with three sites located across Canada. In addition to providing investigators with general information, this guide provides examples of some common exhibit types that are submitted to the different forensic service areas at NFLS — biology DNA , toxicology, trace, counterfeit, and firearms.
There could be other types of evidence not identified in this guide. Local forensic identification service units may be called upon to assist with the collection of evidence. They have the proper tools and their members have undergone specialized training to ensure evidence is collected properly and safely. The following are some general guides, tips and best practices that can be used by investigators should forensic identification members not be available to assist.
Always use gloves and a mask. Crime scenes and handling exhibits can be dangerous. Minimize exposure to infectious disease, hazardous drugs, and reduce the risk of contaminating the evidence by always wearing gloves and a mask when handling exhibits, including when you are collecting, packaging or shipping evidence. When finished, remove gloves and wash thoroughly with soap and hot water. Eye protection and other personal protection is also advised.
Keep exhibits that need to be examined completely separate from each other, from different scenes, and from Comparison samples. Wear gloves at all times, changing them frequently e.
Avoid excessive handling of exhibits. Use a clean tool for each exhibit being processed. Use disposable tools such as scalpels whenever possible. Alternatively, clean all scissors and forceps thoroughly with alcohol between uses. Always package exhibits separately in clean bags or containers that will not leak, break or open.
Fingerprinting is not a service provided by NFLS and is the responsibility of the investigator and agency. Your local forensic identification unit may provide this service or assist you in determining if the surface of the item is suitable for fingerprinting. Also, when conducting fingerprinting, avoid excessive handling of the exhibit, even while wearing gloves.
Please note that if the exhibit requires both fingerprinting and other forensic services at NFLS, there is a recommended order and workflow. For example, fingerprinting and swabbing for DNA analysis are normally done prior to submitting firearm-related exhibits for firearm testing and examination.
Contact the Forensic Assessment Centre for further guidance. For larger exhibits with visible staining that cannot be submitted to NFLS e. Using a sterile disposable scalpel, carefully cut out the area of interest ensuring to leave a sufficient border around the stain.
When collecting truly small particles, such as hair or paint chips, it is best to fold them in a piece of paper and seal in an envelope or plastic bag. Investigators may be required to collect biological samples for DNA analysis. Such material can be wet e. In these situations, there are various collection methods available and different areas to swab that allow the highest potential to recover a DNA profile.
Objects that have been handled by multiple individuals door knobs or telephone receivers are not recommended for forensic DNA analysis as they rarely yield useable information. See Figure 1: Common examples of some areas to swab that provide the highest potential of DNA recovery. Following are some common exhibits showing what areas to swab that provide the highest potential of DNA recovery. More detailed information about the collection process for each of these exhibits is provided in the next section on collection and packaging "by exhibit type.
DO NOT swab if the firearm was used as a weapon causing injury or death. Submit the firearm "as is" to NFLS. DNA analysis is based on a comparative process wherein a DNA profile that is obtained from an exhibit is compared to the DNA profile from a known person, from personal effects or discarded items. For all DNA samples submitted to NFLS for comparison, clearly indicate on the C form whether a sample is from consent, from a warrant, or a discarded item.
In all cases, always wear disposable gloves, even when collecting comparison samples. If it is not possible to collect any of the above samples e. Personal effects , such as a toothbrush, razor or hair brush, can be collected and submitted as Comparison samples. As it relates to the personal effects of a known suspect, it is not possible to submit them as Comparison samples without consent or a court-ordered warrant.
Discarded items , such as gum, a cigarette butt or a drinking container, can be collected and submitted as Comparison samples, however, the act of discarding must be viewed by police. For example, the cigarette butt has to be seen by police as discarded by the suspect in order to be used as a comparison sample.
Ensure that discarded sample is packaged, sealed and labelled separately and that the origin of the sample is clearly marked. The information below will assist in preventing the deterioration, unauthorized handling, loss, contamination and unnecessary alteration of exhibits during storage and prior to submitting exhibits to the RCMP's National Forensic Laboratory Services NFLS.
Ensure exhibits are completely dry especially when using plastic bags some exceptions are noted below. If a drying cabinet is not available, allow wet or moist exhibits to dry naturally in a clean low traffic area prior to packaging. DO NOT hand fan, use electric fans, hair dryers or other heat sources to speed up the drying process as air currents and excessive heat may cause some loss of evidential material. Fully dried exhibits can be stored at room temperature provided it is not excessively hot or humid.
The best storage for most exhibits is generally a freezer. If unavailable, use a fridge. If there is no fridge, you can store at room temperature, however, ensure the item is fully dried. Proper packaging and delivery of exhibits to NFLS is critical. Improperly packaged exhibits can be a health hazard, may cause the exhibit to become contaminated or could even destroy the evidence. Improperly packaged exhibits might not be suitable for analysis and will be sent back to you by NFLS without further processing.
For glass and other breakable items, ensure there is plenty of protective material used when packaging. Knives should be packaged in a knife box, or protected, secured and tied down in a box. Follow Transport Canada's Transportation of Dangerous Goods Regulations: improper transportation of dangerous goods is an offence.
Inspect each layer of packaging to ensure they are properly closed and that at least one of the layers for each exhibit is sealed. Following are some examples of what constitutes a "sealed package":.
To ensure your submission is processed promptly, please ensure that exhibit identifier listed on Form C Request for Forensic Laboratory Analysis matches exactly to the exhibit identifier used on the actual exhibit.
These identifiers should also match exactly to information found on each layer of packaging. Fingerprinting on any adhesive tape-related exhibits must be done prior to submitting for DNA analysis.
Contact your local forensic identification unit for fingerprinting services. Advise the person who is fingerprinting that DNA analysis will also be done and advise NFLS that the exhibit was first sent for fingerprinting.
Direct contact between Hemastix test strips and a biological stain may negatively affect certain DNA analysis procedures.
DO NOT swab if used on a person as a weapon causing injury or death. Package knife "as is" and submit to NFLS. DO NOT swab tools or weapons that have been used on a person to cause injury or death. Swab handled objects to determine if biological evidence exists.
Use one moist swab per stain. Swab both sides of textured area as a single swab. Fingerprinting on any adhesive tape related exhibits must be done prior to submitting for trace analysis. Advise the person who is fingerprinting that trace analysis will also be done and advise NFLS that the exhibit was first sent for fingerprinting.
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