A crime scene search can be described as a planned, coordinated and legal search by law enforcement officials to locate physical evidence. The successful investigation and prosecution of crimes requires, in most cases, the collection, preservation and forensic analysis of evidence, which can be crucial to demonstrations of guilt or innocence. The Crime Scene Investigations Division of the Grand Prairie Police Department's Criminal Investigations Bureau collects physical evidence in the field as well as performing initial evidence testing in our modern crime lab facility. Further analysis, when necessary, is performed by regional forensic labs, such as the Southwestern Institute of Forensic Sciences at Dallas, or the FBI Laboratory in Washington, D.C. The Grand Prairie Police Department utilizes two "Mobile Crime Labs" for CSI operations.
The Grand Prairie Police Department has a staff of civilian investigators and police officers who are specially trained, equipped and assigned to collect physical evidence at the scene of a crime. This includes the recovery of latent prints; recovery of shoe, tool and tire impressions; photographing crime scenes; preparing crime scene sketches; collecting, preserving, and transmitting physical evidence, including biological materials; and comparing latent fingerprints and palm prints.