FUNDAMENTALS OF INVESTIGATION HRS 1-8 CHICAGO POLICE DEPARTMENT
22=8A | Questions with 100% Correct Answers | Updated &Verified | 2024-2025 | 100%
Score
What is an investigation? - ✔✔AN INVESTIGATION IS A SYSTEMATIC INQUIRY FOR THE FACTS RELATED
TO A CRIME WITH THE GOAL OF LOCATING AND ARRESTING THE OFFENDER.
What are the 4 parts of an investigation? - ✔✔DETERMINE WHAT CRIME HAS BEEN COMMITTED
DETERMINE WHO COMMITTED THE CRIME
OBTAIN SUFFICIENT INFORMATION FOR ARREST AND PROSECUTION
LOCATE AND ARREST THE SUSPECT
What are the general expectations of an investigation? - ✔✔CONDUCT A THOROUGH AND ACCURATE
INVESTIGATION
CONVEY CONCERN AND INTEREST TO ALL IN NEED OF POLICE SERVICE
COMPLETE AND SUBMIT ALL NECESSARY REPORTS AND NOTIFICATIONS, UNLESS OTHERWISE DIRECTED
BY A SUPERVISOR
Who can assign an officer an investigation? - ✔✔SUPERVISOR
OEMC VIA RADIO DISPATCH
OEMC VIA PDT/PCAD
ON-VIEW
What are the preliminary investigator's responsibilities? - ✔✔● RENDER AID TO THE INJURED
● DETERMINE IF THERE IS REASONABLE BELIEF THAT A CRIME HAS BEEN OR IS BEING COMMITTED
● TAKE APPROPRIATE ACTION TO STOP THE CRIME, IF IN PROGRESS
● ARREST THE OFFENDER IF STILL ON OR NEAR THE SCENE AND PROBABLE CAUSE FOR AN ARREST
EXISTS
● PROTECT AND PRESERVE THE CRIME SCENE FOR THE COLLECTION AND PROCESSING OF EVIDENCE
● LOCATE, IDENTIFY AND INTERVIEW THE COMPLAINANT/WITNESS,
,What is the importance of documentation?
A well-documented report: - ✔✔● ESTABLISHES ALL THE ELEMENTS OF A CRIME
● PROVIDES A BASE FOR ALL FOLLOW-ON INVESTIGATORS
● ACCURATELY DESCRIBES THE WHO, WHAT, WHERE, WHEN
What are the expectations for the original incident case report? - ✔✔● SHOULD BE SUFFICIENTLY
DETAILED SO THAT FOLLOW-UP INVESTIGATORS WILL NOT NEED TO CONTACT THE REPORTING OFFICER
● IS THE BASIS FOR WHAT CAN BE MUCH LARGER INVESTIGATIONS
● CAN PROVIDE THE ELEMENTS ON WHICH CRIMINAL PROSECUTIONS ARE BASED
What is evidence? - ✔✔ANY OBJECT, ELECTRONIC FILE OR RECORD, BIOLOGICAL SPECIMEN, MARKING
OR IMPRESSION, NO MATTER HOW SMALL, THAT MAY ASSIST IN THE RECONSTRUCTION OF A CRIME,
LEAD TO THE IDENTIFICATION OF THE OFFENDER, OR CONNECT THE OFFENDER WITH THE VICTIM OR
THE SCENE OF THE CRIME.
What is the process of recovering evidence? - ✔✔THE PRELIMINARY INVESTIGATOR WILL EVALUATE A
CRIME SCENE FOR EVIDENCE AND:
● NOTIFY A SUPERVISOR IF EVIDENCE IS PRESENT
● SUPERVISOR WILL DETERMINE IF FORENSIC SERVICES IS NECESSARY
● THE PRELIMINARY INVESTIGATOR CAN ALSO REQUEST FORENSIC SERVICES (ET'S/PFI'S) IF A
SUPERVISOR IS UNABLE TO RESPOND
● REQUEST FOR EVIDENCE TECHNICIANS/POLICE FORENSIC INVESTIGATORS IS MADE VIA CITYWIDE 2
What does evidentiary integrity entail? - ✔✔● DO NOT DISTURB EVIDENCE UNLESS NECESSARY TO
PRESERVE LIFE OR PROTECT THE EVIDENCE FROM LOSS
● EVIDENCE WILL REMAIN UNDISTURBED UNTIL EVALUATED BY FORENSIC SERVICES PERSONNEL OR
DETECTIVES
● IF NECESSARY TO MOVE OR DISTURB EVIDENCE, THE OFFICER MOVING IT WILL.
While at a crime scene, what is prohibited? - ✔✔● SMOKE OR CHEW TOBACCO
, ● USE A LAND-LINE PHONE
● USE THE BATHROOM
● SEARCH THE BODY OF A HOMICIDE/DEATH INVESTIGATION VICTIM
● SEARCH AN INDOOR SCENE BEYOND WHAT IS NECESSARY TO ESTABLISH OFFICER SAFETY
POLICE OFFICERS CAN CONTAMINATE A CRIME SCENE.
What is deoxyribonucleic acid (DNA)? - ✔✔the blueprint material of genetic information; contains all
the information that controls the function of every living cell. ● THE BUILDING BLOCK FOR AN
INDIVIDUAL'S GENETIC MAKEUP
● IT IS A COMPONENT OF EVERY CELL IN THE BODY
● IT IS THE SAME IN A PERSON'S BLOOD, SKIN, SEMEN, SALIVA, SWEAT, MUCUS, URINE, FECES, BONE
MARROW, & TOOTH PULP
● EXCEPT FOR IDENTICAL TWINS, EACH PERSON'S DNA IS DIFFERENT FROM EVERYONE ELSE DNA
COLLECTED FROM A CRIME SCENE CAN LINK OR ELIMINATE A SUSPECT TO A CRIME SCENE
● THE SAME SUSPECT MAY BE LINKED TO DISTINCT, SEPARATE SCENES
Where can DNA be recovered from? - ✔✔white blood cells, skin cells, semen, saliva, hair
GRIPS FROM WEAPONS,TOOLS, LIGATURES, TAPE, CLOTHING, HATS, BROKEN GLASS, TOOTHPICKS,
STAMPS, ENVELOPES, BITE MARKS, VEHICLES, POP/BEER CANS, CIGARETTE BUTTS
What are additional sources of evidence? - ✔✔FINGERPRINTS, VIDEO SURVEILLANCE, PHOTOGRAPHS,
COMPUTERS, TABLETS. SOCIAL MEDIA, CELLULAR TELEPHONES, FINANCIAL RECORDS, PAWN SHOPS,
FLEA MARKETS, ONLINE SALES SITES, CRAIGSLIST/BACKPAGE
When is it appropriate to gather intelligence? - ✔✔WHEN GATHERING INTELLIGENCE, THERE MUST BE A
REASONABLE LAW ENFORCEMENT PURPOSE:
● THE INTELLIGENCE IS INTENDED TO ADDRESS UNLAWFUL CONDUCT
● THE INTELLIGENCE IS INTENDED TO ADDRESS PUBLIC SAFETY ISSUES, WHETHER CRIMINAL OR NOT
● ACQUIRING INTELLIGENCE WHICH MAY BE USEFUL IN ALLOCATING PUBLIC SAFETY RESOURCES OR
USEFUL TO FUTURE CRIMINAL INVESTIGATIONS
HOW CAN INFORMATION BE GATHERED?
THROUGH STUDYING, COMMUNICATION, RESEARCH, AND OBSERVATION.
22=8A | Questions with 100% Correct Answers | Updated &Verified | 2024-2025 | 100%
Score
What is an investigation? - ✔✔AN INVESTIGATION IS A SYSTEMATIC INQUIRY FOR THE FACTS RELATED
TO A CRIME WITH THE GOAL OF LOCATING AND ARRESTING THE OFFENDER.
What are the 4 parts of an investigation? - ✔✔DETERMINE WHAT CRIME HAS BEEN COMMITTED
DETERMINE WHO COMMITTED THE CRIME
OBTAIN SUFFICIENT INFORMATION FOR ARREST AND PROSECUTION
LOCATE AND ARREST THE SUSPECT
What are the general expectations of an investigation? - ✔✔CONDUCT A THOROUGH AND ACCURATE
INVESTIGATION
CONVEY CONCERN AND INTEREST TO ALL IN NEED OF POLICE SERVICE
COMPLETE AND SUBMIT ALL NECESSARY REPORTS AND NOTIFICATIONS, UNLESS OTHERWISE DIRECTED
BY A SUPERVISOR
Who can assign an officer an investigation? - ✔✔SUPERVISOR
OEMC VIA RADIO DISPATCH
OEMC VIA PDT/PCAD
ON-VIEW
What are the preliminary investigator's responsibilities? - ✔✔● RENDER AID TO THE INJURED
● DETERMINE IF THERE IS REASONABLE BELIEF THAT A CRIME HAS BEEN OR IS BEING COMMITTED
● TAKE APPROPRIATE ACTION TO STOP THE CRIME, IF IN PROGRESS
● ARREST THE OFFENDER IF STILL ON OR NEAR THE SCENE AND PROBABLE CAUSE FOR AN ARREST
EXISTS
● PROTECT AND PRESERVE THE CRIME SCENE FOR THE COLLECTION AND PROCESSING OF EVIDENCE
● LOCATE, IDENTIFY AND INTERVIEW THE COMPLAINANT/WITNESS,
,What is the importance of documentation?
A well-documented report: - ✔✔● ESTABLISHES ALL THE ELEMENTS OF A CRIME
● PROVIDES A BASE FOR ALL FOLLOW-ON INVESTIGATORS
● ACCURATELY DESCRIBES THE WHO, WHAT, WHERE, WHEN
What are the expectations for the original incident case report? - ✔✔● SHOULD BE SUFFICIENTLY
DETAILED SO THAT FOLLOW-UP INVESTIGATORS WILL NOT NEED TO CONTACT THE REPORTING OFFICER
● IS THE BASIS FOR WHAT CAN BE MUCH LARGER INVESTIGATIONS
● CAN PROVIDE THE ELEMENTS ON WHICH CRIMINAL PROSECUTIONS ARE BASED
What is evidence? - ✔✔ANY OBJECT, ELECTRONIC FILE OR RECORD, BIOLOGICAL SPECIMEN, MARKING
OR IMPRESSION, NO MATTER HOW SMALL, THAT MAY ASSIST IN THE RECONSTRUCTION OF A CRIME,
LEAD TO THE IDENTIFICATION OF THE OFFENDER, OR CONNECT THE OFFENDER WITH THE VICTIM OR
THE SCENE OF THE CRIME.
What is the process of recovering evidence? - ✔✔THE PRELIMINARY INVESTIGATOR WILL EVALUATE A
CRIME SCENE FOR EVIDENCE AND:
● NOTIFY A SUPERVISOR IF EVIDENCE IS PRESENT
● SUPERVISOR WILL DETERMINE IF FORENSIC SERVICES IS NECESSARY
● THE PRELIMINARY INVESTIGATOR CAN ALSO REQUEST FORENSIC SERVICES (ET'S/PFI'S) IF A
SUPERVISOR IS UNABLE TO RESPOND
● REQUEST FOR EVIDENCE TECHNICIANS/POLICE FORENSIC INVESTIGATORS IS MADE VIA CITYWIDE 2
What does evidentiary integrity entail? - ✔✔● DO NOT DISTURB EVIDENCE UNLESS NECESSARY TO
PRESERVE LIFE OR PROTECT THE EVIDENCE FROM LOSS
● EVIDENCE WILL REMAIN UNDISTURBED UNTIL EVALUATED BY FORENSIC SERVICES PERSONNEL OR
DETECTIVES
● IF NECESSARY TO MOVE OR DISTURB EVIDENCE, THE OFFICER MOVING IT WILL.
While at a crime scene, what is prohibited? - ✔✔● SMOKE OR CHEW TOBACCO
, ● USE A LAND-LINE PHONE
● USE THE BATHROOM
● SEARCH THE BODY OF A HOMICIDE/DEATH INVESTIGATION VICTIM
● SEARCH AN INDOOR SCENE BEYOND WHAT IS NECESSARY TO ESTABLISH OFFICER SAFETY
POLICE OFFICERS CAN CONTAMINATE A CRIME SCENE.
What is deoxyribonucleic acid (DNA)? - ✔✔the blueprint material of genetic information; contains all
the information that controls the function of every living cell. ● THE BUILDING BLOCK FOR AN
INDIVIDUAL'S GENETIC MAKEUP
● IT IS A COMPONENT OF EVERY CELL IN THE BODY
● IT IS THE SAME IN A PERSON'S BLOOD, SKIN, SEMEN, SALIVA, SWEAT, MUCUS, URINE, FECES, BONE
MARROW, & TOOTH PULP
● EXCEPT FOR IDENTICAL TWINS, EACH PERSON'S DNA IS DIFFERENT FROM EVERYONE ELSE DNA
COLLECTED FROM A CRIME SCENE CAN LINK OR ELIMINATE A SUSPECT TO A CRIME SCENE
● THE SAME SUSPECT MAY BE LINKED TO DISTINCT, SEPARATE SCENES
Where can DNA be recovered from? - ✔✔white blood cells, skin cells, semen, saliva, hair
GRIPS FROM WEAPONS,TOOLS, LIGATURES, TAPE, CLOTHING, HATS, BROKEN GLASS, TOOTHPICKS,
STAMPS, ENVELOPES, BITE MARKS, VEHICLES, POP/BEER CANS, CIGARETTE BUTTS
What are additional sources of evidence? - ✔✔FINGERPRINTS, VIDEO SURVEILLANCE, PHOTOGRAPHS,
COMPUTERS, TABLETS. SOCIAL MEDIA, CELLULAR TELEPHONES, FINANCIAL RECORDS, PAWN SHOPS,
FLEA MARKETS, ONLINE SALES SITES, CRAIGSLIST/BACKPAGE
When is it appropriate to gather intelligence? - ✔✔WHEN GATHERING INTELLIGENCE, THERE MUST BE A
REASONABLE LAW ENFORCEMENT PURPOSE:
● THE INTELLIGENCE IS INTENDED TO ADDRESS UNLAWFUL CONDUCT
● THE INTELLIGENCE IS INTENDED TO ADDRESS PUBLIC SAFETY ISSUES, WHETHER CRIMINAL OR NOT
● ACQUIRING INTELLIGENCE WHICH MAY BE USEFUL IN ALLOCATING PUBLIC SAFETY RESOURCES OR
USEFUL TO FUTURE CRIMINAL INVESTIGATIONS
HOW CAN INFORMATION BE GATHERED?
THROUGH STUDYING, COMMUNICATION, RESEARCH, AND OBSERVATION.
