ALL OF THE AVAILABLE EVIDENCE
relevant to the commission of the crime and the ID of the offender.
what is the principle of exchange
WITNESSES
When a person enters and/or leaves an environment he brings into and/or carries away from the area traces such as hairs, fibres, dust, etc.
which may connect the offender with the crime;
regarding offenders and witnesses what action should the investigator adopt when attending a crime scene
OFFENDERS
WITNESSES