Area Canvass Flashcards
The main objectives of an area canvass may include?
• identifying the offender • identifying and locating evidence, such as vehicles, discarded clothing, weapons and other articles • identifying witnesses • gathering information.
Other benefits of conducting an area canvass may include?
- sightings of the victim or offender before or after the event
- sightings of relevant property or vehicles
- sightings of potential witnesses
- creating the opportunity for an early arrest through early identification of the offender
- obtaining key information to drive the investigation or develop lines of enquiry
- promoting awareness of significant occurrences
- eliminating unidentified vehicles or persons reported by other witnesses
- obtaining an accurate record of the local community.
An area canvass must be regularly?
Reviewed as new evidence is gathered and amended
accordingly.
The OC Investigation, OC Area Canvass and OC Suspects should attend the external/general scene as soon as practicable, to?
Make a reconnaissance of the area and conduct an appreciation and set the parameters and objectives of the canvass.
Relevant locations which may influence the setting of location parameters include?
• scenes, for example:
- sites where victims, offenders or witnesses have been present
- sites where offences have taken place
- sites where vehicles, property or exhibits have been found
• premises within the line of sight of scenes
• access and egress routes to and from scenes
• areas where an offender may have lain in wait
• location where the victim was last seen alive
• locations or premises frequented by the victim
• locations of similar or previous incidents identified by intelligence as having occurred in the same locality as the offence under investigation.
Specialist Police units such as the Criminal Profiling Unit or criminal or geographic profilers may be consulted to assist with?
Setting parameters or identifying locations where suspects are likely to frequent or to reside.
Risk assessment
Once the location parameters are set, intelligence systems should be analysed to establish whether there are any people or events in the area which those carrying out the enquiries should be aware of. This may include?
- violent offenders
- persons wanted by police for other crimes or wanted on warrant
- groups with particular linguistic or cultural needs
- local incidents or issues which residents may raise with Police.
Time parameters are used by area canvass staff to verify the presence of individuals at an address or area, and to interview potential witnesses. Time parameters should be set for?
• the offence (i.e. times between which the offence is thought to have occurred)
• the scene (i.e. times when people visited the scene)
• sightings (i.e. times at which a victim, other witness or offender was seen at
particular locations)
• previous residents and visitors at the scene
• consideration of people’s varying work times.
People residing or working in the area may have relevant information. These witnesses may be peripheral or significant to the investigation and may include people who have witnessed?
- events connected to an incident under investigation
- sightings of the victim or offender before or after the event
- sightings of other potential witnesses
- sightings of relevant property or vehicles.
The OC Area Canvass should seek to obtain suitable?
Street maps, aerial photographs showing houses and the location of sections, geological information, local council records and other applicable references.
To ensure relevant information is gathered in a consistent manner during an Area Canvass, investigators should use a?
Prescribed questionnaire to incorporate the circumstances of the particular offence.
Key points for team briefings - Advise that evidence of possible probative value must be?
Obtained in a formal written statement rather than notebook form. Note: The questionnaire must be endorsed, if a statement is taken.
Key points for team briefings - Advise staff on?
• what action to take if they believe they have identified the suspect
• what action to take if they locate items of evidential value
• what action to take if individuals refuse to assist
• how to complete the correspondence flow
• what information can be disclosed during the area canvass (i.e. information
in media releases or otherwise already in the public domain)
• what information must not be disclosed.
Monitoring progress - As each household is completed, the OC Area Canvass should?
Shade in a map to maintain a quick up-to-date record of the areas canvassed. A similar map, updated daily,
should be retained at the Operation Headquarters.
In addition, the OC Area Canvass should continually review completed canvass forms as they are submitted, in order to?
- evaluate the quality of completed work and provide quality assurance
- identify lines of enquiry to be highlighted to the 2IC
- monitor ongoing progress of the canvass
- facilitate the detailed recording of progress.