serious + major crimes

categories

• volume - high frequency, low severity

• serious - more complex offences requiring increased resource

• major - serious offences, required SIO, major incident room, long term staffing, specialist skills

homiocide + major crime categories

• A+ - extreme public concern and intense media

• A- - grave public concern, vulnerable people at risk, offender unknown

• B - offender unknown but low ongoing public risk, management within force resource

• C - offender known from outset, investigation straight

critical incident -

• become critical due to seriousness, profile or homicide links

• police must respond appropriately at all levels to maintain public confidence.

building blocks of investigation

• preserve life, secure evidence, identify victim, identify suspect

strategic phases - initial response

• deploy officers, preserve life, arrest offenders, locate material evidence

strategic phases - investigation

• develop investigative strategies

• identify and arrest suspects

• gather evidence

strategic phases - case management

• conduct past charge enquiries

• prepare prosecution and defence material

• manage witness and exhibits

role of CSI

• develop and implement investigative strategy

• manage info and decision making systems

• allocate and manage resources

forensic biologist

• blood pattern analysis

• specialist evidence enhancement

• sexual offence analysis

fire and explosion expert

• identify fire cause and origin

• investigate gas, accidental or deliberate explosions

• deal with terrorist or illicit explosives

forensic anthropologist

• examine skeletal remains

• assist with identification and cause of death

• support DVI opperations

forensic archeologist

• locate and excavate burial or deposition site

• establish timelines and sequence of events

forensic entomologist

• estimate time of death using insect life cycle

• accuracy reduced over longer timescales

footwear specialist

• recover and enhance marks

• analyse blood and trace evidence

• identify shoe make and model

role of CSI - before arrival

• gather info from logs

• conduct health and safety assessment

• check stock and vehicle equipment

role of CSI - initial actions - confirm

• type of crime

• speak to those present to gather info

role of CSI - initial actions - cordon

• police tape

• inner cordon - protects immediate scene, access limited to authorised personal

• outer cordon - secure a wider area, keeps public and media at safe distance

role of CSI - initial actions - secure

• maintain cordons

• remove unauthorised people

• establish a rendezvous point

• start scene log

• protect evidence from environmental risks

• identify equipment required

role of CSI - initial actions - control

• use rendezvous point

• restrict access to use scene log

• establish communication lines