With which office does the arson investigator work closely in preparation for presentation of the case?

The arson investigator works closely with the district attorney's office in preparation for the presentation of a case because the district attorney is responsible for prosecuting criminal cases, including arson. The collaboration is essential as the arson investigator gathers evidence, analyzes fire patterns, and works to establish the cause of the fire. This collected information needs to be clearly presented in legal terms to support the prosecution’s case. The investigator’s findings are critical for the district attorney to build a strong argument in a court trial, ensuring that all legal procedures are followed and that the evidence presented is admissible.

While other offices, such as the fire marshal's office, may provide support in terms of fire investigation and enforcement of fire codes, the district attorney's office directly handles the legal prosecution aspect of arson cases. The public safety office and emergency management office may also play roles in fire response and community safety, but their functions do not primarily focus on the legal prosecution of arson offenses.