Mesa PD runs the most thorough, in-depth academy in the state of Arizona; one used and respected by other state agencies. Our dispatch center dispatches regionally and nationally acclaimed crime lab that has been opened up to our neighboring agencies. The Mesa PD also owns our own jail.
Fusion is a collaborative group focused on cross-agency information. The Police Chiefs of the Gilbert Police Department, Salt River Police Department, Chandler Police Department, Scottsdale Police Department, Tempe Police Department, Apache Junction Police Department, the U.S. Marshals, and Mesa PD come together to disseminate information to better serve the entire Arizona community. The Mesa PD is proud to be the host of this dynamic group.
Latent Print Unit
The Latent Print Unit performs?scientific examinations in the area?of friction ridge analysis, including?the comparison of latent finger?and palm prints to known subjects'?prints. Various powders, chemicals,?and illumination techniques are?used to process evidence for latent?prints. Latent prints are searched?in a computer database known as?the Arizona Automated Fingerprint?Identification System (AZAFIS), which?enables unidentified latent prints to?be compared with approximately two?million finger and palm print records from known individuals within the database. The Latent Print Examiners are responsible for processing major crime scenes, providing expert witness testimony regarding their findings in courts throughout the state, and instructing law enforcement personnel.
Controlled Substances Unit
The Controlled Substances Unit examines evidence for?the presence of controlled substances including but not limited to marijuana, cocaine, cocaine?base (crack), methamphetamine,?and heroin. Unit members also provide expert courtroom testimony regarding the identification of controlled substances as well as training and oversight to officers and other department members who perform preliminary drug testing in the field.
The Toxicology Unit performs blood alcohol analyses, urine drug screening and confirmations, and supports the preliminary breath alcohol testingas well as the Drug Recognition Examiner programs. Toxicology Unit members also assist officers during alcohol workshops. Various analytical techniques are used to determine?the concentration of drugs in blood and urine samples. Members of this unit provide expert witness testimony often, regarding DUI and other cases.
The Firearms Unit conducts examinations of firearms and tool mark evidence to determine if a firearm or tool was used in a crime. Suspected firearms or tools are compared to evidence cartridge cases, bullets, or tool marks using a comparison microscope. Other examinations performed include firearms function testing, distance determinations, ejection pattern
testing, obliterated serial number restorations, and shooting incident reconstructions. In addition, examiners enter fired cartridge cases and bullets into the National Integrated Ballistic Information Network (NIBIN), which contains images of fired cartridge cases and bullets from crime scenes, as well as test fires from guns used in crimes. When new images are entered into the system, images are searched in the database for a match. Members of this unit also testify in court.
The Biology Unit examines evidence for the presence of biological substances and analyzes a sample to obtain a DNA profile. The Biology Unit compares?known profiles from victims and/?or suspects to evidentiary sample?profiles for inclusion or exclusion in?a case. The profiles are then entered?into the Combined DNA Index System?(CaDIS). CODIS compares evidence?from one crime scene to another?as well as arrestee and convicted?offender profiles nationwide. The?Biology unit also conducts bloodstain?pattern analysis in the lab and at?crime scenes. Members of this unit?provide expert witness testimony?in court regarding their findings in?the areas of Serology (body fluid?identification), DNA, and Bloodstain?Pattern Analysis.
Fingerprint Identification Unit
The Fingerprint Identification Unit processes suspect, juvenile, and applicant fingerprints through the Arizona Automated Fingerprint Identification System (AZAFIS) to search against prior records in order to provide an identification. They also perform inked print comparisons, maintain fingerprint records, and testify in identification hearings in court.
Photo Laboratory Unit
The Photo Laboratory Unit produces digital, color, and black and white reprints for Police Department members; city, county, and federal agencies; and public records requests. In addition to processing film for investigations, the Photo Lab provides various forensic and public relations photographic services; manages the negative and digital photo files; and provides photographic training to Forensic Services personnel.
Forensic Services is supported by Administrative Support Assistants and ForensicServices Laboratory Technicians.