LAB ACTIVITY : Physical Evidence and Chain of Custody
LEADER: Evangelista, Cristine Joyce C.
1. Aluad, Trisha A.
2. Rigos, Jessielyn A.
3. Castelo, Jeremie G.
4. Santos, Angella Grace B.
5. Mapacpac, Neil Levenson V.
6. Ulip, Angelo Demetrius D.
7. Gregorio Phoevy April B.
8. Cruz, Kent Daniella E.
9. Salvatierra, John Dathler
SCENARIO:
A couple was found dead by their neighbors. The man was found lying in the
living room, while his wife was found in their bedroom. Based on the
preliminary investigation, adultery is the main motive of this crime and the
suspect is still unknown. What would you do as a police investigator to
proceed in this kind of situation?
1. OVERALL VIEW OF THE SCENE
2. PICTURE OF THE MALE AND FEMALE VICTIM BODY
Revealing the Clues: A Close-Up Encounter with Crucial Evidence at the Crime
Scene
1. Saliva sample found on 2. Spalattered urine on the
cigarette butt. the floor.
3. Knife with blood 4. Hair sample #2
5.Blood Sample #2 6.Blood Sample #1
7. Hair sample #1
Evidence Labeling
Documenting the crucial elements of the crime scene, each piece of evidence
is meticulously labeled to maintain accuracy and preserve the integrity of
the investigation. The labels provide essential information, including the
item's location, description, and its potential relevance to the case.
CONTENTS:
LABEL: SS01
DESCRIPTION: SALIVA SAMPLE IN CIGARRETTE BUTT
LOCATION: LIVING ROOM
DISTANCE: N/A NOT DIRECTLY RELATED TO THE VICTIM
LABEL:BS001
DESCRIPTION:BLOOD SAMPLE 1
LOCATION: LIVING ROOM, FLOOR NEAR THE MALE VICTIM’S BODY
DISTANCE: FOUND IN CLOSE PROXIMITY TO THE MALE VICTIM’S BODY
LABEL: HS001
DESCRIPTION: HAIR SAMPLE 1
LOCATION: LIVING ROOM, COUCH CUSHIONS
DISTANCE: NOT DIRECTLY RELATED TO THE VICTIM
LABEL: BS002
DESCRIPTION: BLOOD SAMPLE 2
LOCATION: BEDROOM, FLOOR NEAR THE FEMALE VICTIM’S BODY
DISTANCE: FOUND IN CLOSE PROXIMITY TO THE FEMALE VICTIM’S BODY
LABEL:US001
DESCRIPTION: URINE SAMPLE 1
LOCATION:BATHROOM TOILET FLOOR
DISTANCE: NOT DIRECTLY RELATED TO THE VICTIMS
LABEL: HS002
DESCRIPTION:HAIR SAMPLE 2
LOCATION: BEDROOM PILLOW NEAR FEMALE VICTIM’S BODY
DISTANCE: FOUND IN CLOSE PROXIMITY TO THE FEMALE VICTIM’S BODY
LABEL: KN001
DESCRIPTION:STAINLESS STEEL KITCHEN KNIFE WITH BLOOD
LOCATIONLIVING ROOM, COFFEE TABLE
DISTANCE; APPROXIMATELY 2 METERS FROM THE MALE VICTIM’S BODY
Evidence Tagging
In the meticulous process of documenting the crime scene, each piece of evidence
is carefully tagged to establish a clear chain of custody and maintain the
integrity of the investigation. The tags, bearing unique identifiers, are affixed
to the items, providing essential information such as the date, time, location,
and description.
Forensic Photographer and Police Investigators: Documenting the Crime Scene
Together
In a synchronized effort, a skilled forensic photographer and diligent police
investigators collaborate to meticulously document the crime scene. With
precision and expertise, the forensic photographer captures crucial visual
evidence, while the investigators diligently collect and document physical
evidence. Their collective work forms the foundation of a thorough investigation,
aiming to uncover the truth and bring justice to those affected.
Republic of the Philippines
PHILIPPINE NATIONAL POLICE
CHAIN OF CUSTODY FORM
Nature of Case: Adultery Case Investigation
Name of Suspects/s: N/A
Time, Date and Place of Occurrence: 9:11 AM, 7/03/2023, Pasay City
Arresting Officers / Operating Unit:
Description of Evidence/s
1. 0SALIVA SAMPLE (CIGARRETTE BUTT)
Salive sample collected from surfaces that may have benn touched
by the suspect or potential individual involved in a crime.
Location: found in the cigarette butt near male victim,s body
2. URINE SAMPLE
Collected from the bathroom’s floor
3. KNIFE WITH BLOOD
A 8-inch stainless steel kitchen knife with brown handle
Location: on the coffee table, approximately 2 meters away from
the male victim’s body
4. HAIR SAMPLE 2
Hair sample is collected from pillow near the female victim’s
body.
5. BLOOD SAMPLE 2
Blood stains on the floor near the female victim’s body.
6. BLOOD SAMPLE 1
Blood stains on the floor near the male victim’s body.
7. HAIR SAMPLE 1
Hair sample collected from the couch cushions.
TURNED OVER BY: Officer Eduard Pandio, Crime Scene Investigator
Agency/Address: Crime Scene Investigation, Manila
Time and Date : 7/03/2023 11:15 AM
Remarks: Evidence collected and properly secured in evidence bag
RECEIVED BY: Officer Kent Daniela, Evidence Custodian
Agency/Address: PNP- Evidence Custodian Section, Manila
Time and Date: 7/03/2023 11:30 AM
Remarks: Evidence Logged into the system amd stored in a secure evidence locker.
TURNED OVER BY: : Officer Kent Daniela, Evidence Custodian
Agency/Address: : PNP- Evidence Custodian Section, Manila
Time and Date: 7/04/2023, 9;00 AM
Remarks: Evidence transported to the Forensic Laboratory for analysis
RECEIVED BY: Forensic Analyst- Cristine Evangelista
Agency/Address: PNP- Forensic Laboratory, Manila
Time and Date : 7/04/2023, 9:30 AM
Remarks: Evidence received for analysis, chain of custody documentation reviewed
and signed
