U.S. flag

An official website of the United States government, Department of Justice.

Trace evidence

Backlogs and Their Impact on the Criminal Justice System

June 2010

Evidence backlogs have been known to be an issue in crime laboratories. A recent study published by NIJ has shown that backlogs of untested evidence are also an issue in law enforcement evidence storage. This panel will discuss the issues and present preliminary findings from a study of the Los Angeles Police Department's and Los Angeles County Sheriff's Department's experience with clearing out a large backlog of unanalyzed rape kits.

Transcript
Backlogs and Their Impact on the Criminal Justice System
Audio file
1 of 8: Backlogs and Their Impact on the Criminal Justice System, Gerry LaPorte, National Institute of Justice , 2 of 8: Backlogs and Their Impact on the Criminal Justice System, Joseph L. Peterson, Professor and Director, School of Criminal Justice and Criminalistics, California State University, Los Angeles , 3 of 8: Backlogs and Their Impact on the Criminal Justice System, Kevin J. Strom, Senior Research Scientist, Crime, Violence, and Justice Research Program, RTI International , 4 of 8: Backlogs and Their Impact on the Criminal Justice System, Joseph L. Peterson, Professor and Director, School of Criminal Justice and Criminalistics, California State University, Los Angeles , 5 of 8: Backlogs and Their Impact on the Criminal Justice System, Dean M. Gialamas, Director, Scientific Services Bureau, Los Angeles County Sheriff's Department , 6 of 8: Backlogs and Their Impact on the Criminal Justice System, Joseph L. Peterson, Professor and Director, School of Criminal Justice and Criminalistics, California State University, Los Angeles , 7 of 8: Backlogs and Their Impact on the Criminal Justice System, Jeffrey Nye, DNA Technical Leader, Forensic Science Division, Michigan State Police , 8 of 8: Backlogs and Their Impact on the Criminal Justice System, Joseph L. Peterson, Professor and Director, School of Criminal Justice and Criminalistics, California State University, Los Angeles

Trace Evidence

Trace Evidence

Trace evidence refers to materials transferred between people, objects, or the environment during a crime. This evidence can help investigators develop leads, indicating (or excluding) potential suspects or locations for further scrutiny. Trace evidence encompasses a wide range of natural and manufactured materials.

Traditional trace evidence includes:

  • Glass
  • Fibers
  • Tape
  • Paints, dyes, and pigments
  • Gunshot residue
  • Ignitable liquids
  • Explosives
  • Geological (minerals and soils)
  • Pollen...

Making Sense of the DNA Backlog - NIJ Conference Panel

June 2009

Panelists will present findings from two NIJ studies that examined the DNA backlog in law enforcement agencies and crime labs. Panelists will discuss research findings related to new and potential time- and cost-saving approaches.

Transcript
Making Sense of the DNA Backlog - NIJ Conference Panel
Audio file
1 of 5: Making Sense of the DNA Backlog, Mark Nelson, National Institute of Justice , 2 of 5: Making Sense of the DNA Backlog, Kevin Lothridge, Chief Executive Officer, National Forensic Science Technology Center , 3 of 5: Making Sense of the DNA Backlog, Kevin J. Strom, Senior Research Scientist, Crime, Violence, and Justice Research Program, RTI International , 4 of 5: Making Sense of the DNA Backlog, Greg Matheson, Director, Los Angeles Police Department Criminalistics Laboratory , 5 of 5: Making Sense of the DNA Backlog, Question and Answer Session

DNA at Our Fingertips

Date Published
July 2019
Publication Type
Research (Applied/Empirical), Report (Study/Research), Report (Grant Sponsored), Program/Project Description
Agencies
NIJ