Forensic Investigation Unit

Worker Looking at Fingerprints on a Computer

The Forensic Investigations Unit is a highly technical unit that is responsible for the professional processing of crime scenes in an attempt to document all facets of crime thereby providing a solid framework for the reconstruction of the crime. The investigators are able to establish the sequence of events involved in the crime, determine where, when and how the crime was committed as well as who committed the crime. The Forensic Investigations Unit utilizes the natural sciences (Chemistry, Physics, Anatomy, Biology, etc.) plus mathematics to establish the facts of the case and then testify about them in court.

Staff

The Forensic Investigation Unit is composed of 8 Forensic Investigators I and II, 2 Lead Forensic Investigators and 1 Forensic Service Manager. The members of this unit are an integral part of the investigative team which seeks to effectively resolve investigations. The actions of this unit can provide facts and/or information not available from other investigation team members.

Distinct Functions

The Forensic Investigations Unit is divided into three distinct functions.

  1. Automated Fingerprint ID
  2. In-Office Investigations
  3. On-Scene Investigations

The Automated Fingerprint Identification System is commonly referred to as "AFIS." During this phase of the investigation, latent prints from a crime scene can be entered into the statewide or federal database. The system searches all arrest files for possible matches. If the system finds a possible match it alerts the Garland Police Department Forensic Unit. If the comparison is a positive match, the Forensic Investigator will notify the Detective assigned to the case of the positive match of a suspect.

Fingerprint Demographics
2006
2007
2008
2009
AFIS Print Comparisons
4,089
2,141
5,913
3,330
AFIS Print Matches
30
10
25
27
Evidence Processed in Forensic Facility
1,3391,037
977
895
Evidence Submitted to Labs
170
134
144
119
Finger Print Cards Filed
8,188
9,798
6,063
6,650
Images Processed
99,43068,821
76,58977,393
In-Office Investigations
4,769
4,9244,982
4,357
Latent Print Comparisons34,769 35,34427,887
32,992
Latent Print Matches
188
193
108
130
On Scene Investigations3,6023,8244,105
4,105