Detectives and Criminal Investigators

• Examine records and governmental agency files to find identifying data about suspects.
• Examine records to locate links in chains of evidence or information.
• Record progress of investigation, maintain informational files on suspects, and submit reports to commanding officer or magistrate to authorize warrants.
• Obtain facts or statements from complainants, witnesses, and accused persons and record interviews, using recording device.
• Obtain and verify evidence by interviewing and observing suspects and witnesses or by analyzing records.
• Question individuals or observe persons and establishments to confirm information given to patrol officers.
• Prepare charges or responses to charges, or information for court cases, according to formalized procedures.
• Provide information to lab personnel concerning the source of an item of evidence and tests to be performed.
• Obtain summary of incident from officer in charge at crime scene, taking care to avoid disturbing evidence.
• Preserve, process, and analyze items of evidence obtained from crime scenes and suspects, placing them in proper containers and destroying evidence no longer needed.
• Note, mark, and photograph location of objects found, such as footprints, tire tracks, bullets and bloodstains, and take measurements of the scene.
• Analyze completed police reports to determine what additional information and investigative work is needed.

• Participate or assist in raids and arrests.
• Prepare and serve search and arrest warrants.
• Secure deceased body and obtain evidence from it, preventing bystanders from tampering with it prior to medical examiner's arrival.
• Check victims for signs of life, such as breathing and pulse.
• Secure persons at scene, keeping witnesses from conversing or leaving the scene before investigators arrive.
• Search for and collect evidence, such as fingerprints, using investigative equipment.
• Prepare reports that detail investigation findings.
• Determine scope, timing, and direction of investigations.

No durable tasks identified for this role — its real, individually-assessed tasks consistently read as automatable (60%).