Chapter 7
Identifying/arresting suspects
 Disregard Page 208:
-decide to investigate case base don solvability factors:
-witnesses
-suspects known


 All crimes are to be investigated!!!!
-cold cases
Identifying/arresting suspects
 Scene:
Show up ID:
-time is essential
-witness/victim to suspect
-spotlight in in face

US v. Ash, Jr (1973):
-no right to counsel at field ID

Miranda required before questioning
Identifying/arresting suepcts
 Developing a suspect:
-wits/vics/others
-physical evidence
-psychological profiling
-police files
-other files
-informants
Identifying/arresting suepcts
 Vics and Wits:
-page 211 Table 7.1
-eyewitness ID is fallible


 Mug shots:
-time consuming
-if in data base
-Integrated Law Enforcement Face Identification System (ILEFS)
  -3-d system
  -matches images from surveillance/photos
Identifying/arresting suspects
 Composite sketches:


-trained artist

-adequate info from witness

-generate leads
Identifying/arresting suspects
 MO
-series of crimes
-check your crime against others under investigation/solved


 Profiling:
f. psychological/criminal
-suspect mental, emotional, psychological, physical traits
h. victim
-based on victim
j. Geographical
-areas of crimes
Identifying/arresting suspects
 Racial profiling:
-not legitimate in policing

 Databases:
-AFIS
-NIBIN
-CODIS
-PDQ
Identifying/arresting suspects
 Photo array:
-how many photos?

-wits look at each

-initial/date on front

-sign/date back

-conditions when suspect seen
Identifying/arresting suspects
 Line ups:
-minimum of five
-similar looking/dressed
-perform acts
-speak same words
-suspects attorney present
Wits:
-take time
-look at all
-not need to make ID
-be sure
-where saw suspect
Identifying/arresting suspects
Schmerber v. CA (1966):

-suspects refuse to line up

-can be used in court against them

US v. Wade (1967):
-advise suspect of right to counsel
-prior to lineup
Identifying/arresting suspects
 Surveillance:

-covert/discrete

-observation

-people/places

What can be gained from surveillance?
Identifying/arresting suspects
 Surveillant:
-cover
-blend in
-what ways you think?
 Subject:
-whom/what being observed
-suspects/associates
-locations (types?)
Identifying/arresting suspects
 Types of surveillance:


3. Stationary:
-fixed, plant, stakeout
-suspect at/will come to location
-crime will be committed
-vehicles/buildings
-photographs
-scout area prior
Identifying/arresting suspects
 Moving: (tail)
-info on suspect
c. open/rough tail:
-subject knows under surveillance
e. Loose tail:
-undetected
-constant observation
h. Close/tight tail:
-know crime to be committed
Identifying/arresting suspects
 Surveillance:
-aerial

-video

-audio (wiretaps)
Knapp v US (1967)
Phone booth taps need warrants
Identifying/arresting suspects
 Undercover assignments:


-gain confidence

-infiltrate group

-assumed ID

-obtain information/evidence

-criminal activity
Identifying/arresting suspects
 Purposes:

-evidence

-leads

-reliability of wits/CI

-gain info before raid
Identifying/arresting suspects
 Cover:

c. Ruses:
-deception-ID/purpose
-short term

g. Deep:
-assume role
-complete immersion
Identifying/arresting suspects
 Deep:


-credible aliases

-carry weapon

-avoid draw of the street

-remember who you are (Donny Brasco)
Identifying/arresting suspects
 Precautions:
-no notes

-no ID

-HQ communications covert

-Don’t suggest/plan/initiate/participate in crimes
Identifying/arresting suspects
 Entrapment:
Sorrells v. US:
-conception/planning
-offense by officer
-procurement of commission
-by another
-who would not have perpetrated
-trickery/fraud/persuasion of the officer
Identifying/arresting suspects
 Sting operations:


-opportunity to commit created/exploited by police

-targeted likely offender

-UC officer/deception

-”gotcha” climax with arrest
Identifying/arresting suspects
 Raids:
-planned, organized
-operation
-element of surprise

6. Seize evidence
7. Make arrest


Considerations:
-alternatives?
-legality
Identifying/arresting suspects
 Legal arrests: 4th amendment
-arrest?
-misdemeanor in presence
-felonies w/PC
-warrant


 Outdoors arrest:
-no access residence/vehicle
-maintain control
-suspect request access to residence for items implied consent for
   entry/plain view
Identifying/arresting suspects
 Civil liability:
b. PC!
c. Use of force
-reasonable force-amount reasonable person would use
-excessive force-more than reasonable force
Graham v. Connor (1989):
-severity of crime
-immediate threat?
-circumstances rapidly evolving
-flight?
-actively resisting arrest
-perspective of reasonable office on scene-not hindsight
Identifying/arresting suspects
 Use of force continuums:
-commands
-tasers
-physical
-chemical agents
-impact tools
-deadly force

Tennessee v. Garner (1985):
-immediate threat to PO/others
Identifying/arresting suspects
 21 foot rule?
-suspect w/knife


 Gun side away
-practice=habit


 PIT:
Scott v. Harris (2007): deadly force
-weighed intrusion against public interest
-suspect was culpable
-4th amendment pursuits not terminate due to public danger

Chapter 7