STATE AND NATIONAL DNA DATABASES CODIS by g4509244

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									 STATE AND NATIONAL
DNA DATABASES: CODIS

   Division Scientific Services
 CT Forensic Science Laboratory

          Dr. Michael Bourke
             203-639-6400
       How Does it Work?
    Convicted Offender Database
    No Suspect Casework Database
    Missing Persons Database

Compares the DNA profiles from
casework samples to known profiles in
the offender DNA database.
          FBI’s CODIS DNA Database
Combined DNA Index System
 Used for linking serial crimes and

  unsolved cases with repeat
  offenders
 Launched October 1998

 Links all 50 states

 Requires 13 core STR markers
        NDIS Database Statistics

Convicted Offender Profiles   1,570,5777

Casework profiles             75,507




February 2004
        The CT State Sex
     Offender DNA Database

   What are its uses?
        Forensic/Offender Matches
   Sexual Assaults
        1 in 3 No-Suspect
   All Other Felonies
        Burglary
Common Types of Evidence

•Semen
•Blood
•Saliva
•Cigarette butts
•Swabbings of masks, gloves, etc.
Connecticut Database Current
           Status
 40,500 +/- Offenders Collected
 13,850 Offenders Processed

 1000 +/- Offender samples/month
     started March 1, 2004
 1325 No-suspect cases entered
                                                          Convicted Offender Database Statistics
                                                              from October 2003 to Present

                                                         Total Samples Recieved - 40296
                    40000                             STR Profiles Entered into CODIS - 13856



                    35000
                                           Total NS Cases with Profiles in CODIS - 1317

                    30000
Number of Samples




                    25000


                    20000


                    15000


                    10000


                     5000
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                                                                                                                        A
                                                                                                    Month
                             Total                    Profile
  What Samples are in the CT
      CODIS Database
Convicted Offender Samples
  All Felony Convictions (03/01/04)
  Offender sample submissions to the
  laboratory rises from 50 to 1000 /mo
          last month-received ~ 900
Forensic Unknowns
 Any DNA profile from an evidentiary
 sample that does not match the victim or
 an elimination known
CT Database Hit Statistics
     275 Hits / Investigations Aided
    – no suspect sexual assaults
    – Burglary, Armed Robbery
    – case to case “hits”


   In 2005, CT DNA Database generated
    approximately three “hits” a week.
                       Total CT DNA Database Investigations Aided
300
                      State/National Total Investigations Aided:               275                                                                                        275
275

250

225

200

175

150

125

100

75

50

25

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                                                                                        Month
   What happens when
     there is a hit?
1. Confirm the data at the laboratory
2. Notify interested agencies
      Submitting agency
      State’s Attorney’s Office
      Chief State’s Attorney’s Office
3. Receive and process the
      confirmatory known
4. Issue the “Hit” report
Investigations Aided
Through January 2006

                                                         es
30,985 Investigation Aided in 49 States and 2 Federal Laboratori



   310                                                            0 (VT)
                                                                              60
                       13         3
                                            393
                                                                                    14(NH)
 973                                               748
              4                   4                                   3,711        361 (MA)
                        5                                 1,172                    2 (RI)
                                             92                 751             275(CT)
                                  14                     1,668                 267 (NJ)
        225                                           491
                  36                             3,578        8                 6 (DE)
                            234                                               416(MD)
1,128                              170        790       199     3,153
                                                                     313       97 (FBI)
                                                         103
              917       507            97         90               375

                                                       5 1,038 660
                                  1,188                                     27 (US Army)
                                                  371
   142                                                                     3,903 (FL)


                                                                                0 (Puerto Rico)
                                       2 (Hawaii)


The “Investigations Aided” is definedthe number of criminal investigations where CODIS has
                                   as
                                                         additi
added value to the investigative process. (Exclusions inon to hits can aid an investigation.
CODIS can only aid an investigation one time.)
Case #1           1994          adjudicated
      CT’s first database hit

1. Sex assault by unknown cab driver
2. DNA extracted from unsolved rape
3. Database search “hit” on an individual
      incarcerated for similar crime
4. Individual dropped appeal of 1st
      conviction, pled guilty to the rape,
      additional time was attached to
      his current sentence
5. Closure for the victim
  Case #2          1997
Elderly housing project Serial Rapist

1. 80+ female victim was talked into
      allowing suspect to gain entrance.
2. Victim was sexually assaulted and semen
      recovered.
3. DNA profile matched to a sex offender in
      the DNA database.
4. Investigative leads for two other cases
      w/ similar modus operandi.
  Case #3           1997
No visual identification
1. Victim awoke to find an intruder in her
       bedroom at 5:30 am.
2. Victim was told to cover her face with
       a pillow-never saw her rapist.
3. Victim was sexually assaulted, semen
       was recovered.
4. DNA database “hit” on a previous sex
       offender.
5. DNA is the ONLY physical evidence
       placing this individual at the scene.
 Case #4              1995
Recidivism-a real case history
1. Victim was sexually assaulted by male
        motorist who stopped to aid her
        while she was changing a flat tire.
2. DNA database “hit” identified the rapist.
3. Offender’s criminal history:
        1991 3 rapes within 2 days, convicted
               & served 2.5 yrs before parole.
        1995 18 months of parole before arrest
               for sex assault #4.
        1997 3 arrests for sex assaults (#5-#7)
               DNA database match (#8)
               investigative leads for 2 more
             serving 25+ yrs.
 Case #5           1994
DNA exonerates and aids investigation

1. 12 yr girl is walking home from school.
2. Victim is sexually assaulted at knifepoint.
3. Following the assault, victim misidentified
       3 potential suspects-DNA testing
       exonerated all 3 men.
4. In 1998, DNA database “hit” identifies
       the real rapist.
5. Closure for the victim..
  Case #6           1999
Armed Robbery

1. Bank teller robbed at gunpoint by man
      with a ski mask.
2. Police dogs track down a ski mask discarded
      in a nearby alley.
3. DNA collected off ski mask matched to
      a DNA profile in the database to
      provide an investigative lead.
   Case #7          2001
 Serial Rape/Homicide Task Force
1. 7+ women raped and murdered.
2. Police link 7 Rape/Homicides by M.O.
3. Semen evidence from 3 victims matched to
   CT Convicted Offender.
Task force investigates other violent unsolved
Sexual assaults. DNA (semen) testing generated
1 offender hit (2nd individual) and 1 case-to-
case hit.

2004– convicted of 3 rape/homicides.
 Case #8           2001-2002
Gang Rape

1. Woman sexually assaulted by 3 males.
2. 3 different profiles developed (semen stains).
3. CT Database search hits CT Offender (2001).
    Matched offender will not ID accomplices.
 Case #9           2003
Serial Rapist

1. Four home invasion/rapes occurred in a
   six week period in 1984.
2. CT Database search matches the semen in
   all four cases (forensic hit), but does not
   match to any Offender.
3. Chief State’s Attorney’s Office is pursuing
   a John Doe warrant for all four cases.

								
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