How is a forensic scene protected & initially examined?

the first and most important thing

relating to the investigation of an

alleged crime scene is to protect the

scene so that items which may ultimately

have evidential value are preserved and

protected enabling them to be recovered

by crime scene investigators or forensic

scientists once a crime scene has been

identified police will put in place a

cordon or a number of quadrants across

the area

these may consist of simple barrier tape

and are used to block off areas of the

scene there are often inner and outer

Corden's established where access to the

area is controlled in different ways for

example only authorized personnel may be

permitted to enter the inner cordon a

police officer will stand by the cordon

and will keep a record or log of

everyone who enters the scene and their

time of entry and departure the scene

investigators will wear personal

protective equipment or PPE which is

normally a scene of crime suit gloves

often two pairs that are taped at the

COFF over shoes and a facemask this PPE

is worn to minimize the possibility of

contamination of the scene by the scene

investigators and also has a protection

for the scene investigators against

contaminants and hazards which may be

present scene investigators will also

establish a common approach path this is

the route that everyone entering and

exiting the scene will follow the common

approach path allows people to move

within the scene while minimizing the

possibility of contaminating the scene

prior to establishing a common approach

path the scene of crime officers will

examine the route to ensure that no

evidence is missed scenes are recorded

by crime scene investigators using video

photography and written notes it is very

important to have an accurate record of

the activities undertaken during the

scene investigation and in particular

what photographs are taken what actions

and decisions were undertaken and their


now what was the sequence of activities

and who did what these cenotes are

called contemporaneous notes which means

that they were written at the time of

the examination and form an important

part of the forensic science process and

the evidential Chain of Custody

when items are recovered from crime

scenes by the investigators they are

packaged into appropriate containers and

a unique reference number or you are n

is written onto the container the

containers are sealed at the scene all

recovered items are documented in the

examiner's notes and may be examined

further in a laboratory

once items are identified and recorded

they are recovered from the scene the

chain of custody is a means whereby the

item can be accounted for from the

moment it is collected to its appearance

in court each package will carry a label

signed undated by any person that

examines the item different types of

packaging material are used depending on

the type of sample and the packaging

material prevents the sample from being

contaminated thereby ensuring the

integrity of the sample throughout the

investigative process changes to a

landscape can occur even after a short

period of time so the search for

clandestine burials can be a challenging

exercise for the investigation team as

we have briefly discussed the search

phase is often categorized by a

multidisciplinary approach that involves

police officers trained in search

techniques together with a range of

forensic experts often including the

forensic archaeologists this team will

attempt to identify the location of the

clandestine burial and other areas that

may be of interest there are a variety

of different search techniques that can

be used depending on the case and

possible location of the remains

regardless of the search techniques that

are used the identification of any

suspicious area within the landscape

must ultimately be investigated by the

forensic archaeologists in our case

involving the discovery of the human

bone in woodland on the law Hill in

Dundee police officers have attended the

scene and the forensic anthropologist

has subsequently identified that the

bone is human the police have set up an

outer scene cordon and the crime scene

investigators will set up the common

approach path and inner scene cordon on

closer inspection of the woodland a

small area of disturbed soil has been

marked by a red flag as a location for

further investigation a police search

team were sent into the woodland to

search for any additional items of

potential forensic significance any

items of interest would be seized as

exhibits and kept for examination and

analysis at a later date this process

will be overseen by the crime scene

manager who will ensure the integrity of

the crime scene and that the evidence is

correctly identified recorded recovered

packaged labeled and removed from the

scene the appropriate forensic

specialists will work in conjunction

with the crime scene manager and the

crime scene investigators to examine

particular aspects of the scene as