Death Investigation.

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Presentation transcript:

Death Investigation

To determine cause, mechanism, and manner of death If homicide, who caused death? 3 major phases: - at death scene - autopsy at morgue - lab tests

At Death Scene Death investigator – initial assessment of body and death scene Photos and sketches - position of body - identification - visual record of lividity, blood and trace evidence, etc.

Document signs of trauma Make observations about time of death (TOD) - can help ID suspects, confirm alibis

Postmortem Interval (PMI) = time b/t death and discovery of body - longer PMI = less accurate ETD Look for: signs of livor mortis (30 min – 2 hrs)/ rigor mortis (2-4 hrs) degree of decomposition scene markers = nonbiological evidence that gives clues to TOD

Collect evidence, chain of custody, sent to lab Paper bags over hands and feet Body wrapped in clean sheet or bag for transport Protects trace evidence

Interview witnesses, victim’s family - Gathers info re: normal routine Reviews victim’s medical history and police reports - tests for ME to order