It may be done differently, by different units, in different jurisdictions, but the ones I am familiar with are conducted by a special unit of the Sheriff's Office assigned to the Circuit Court specifically to perform these duties. In other jurisdictions I am familiar with a group of special investigators working for the Prosecutor's Office handles them.
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In the State of Missouri the Dept. of Proation and Parole conducts the investigation for all counties in the State.
Depends on the jurisdiction you are asking about. It can be done by a unit of investigators from the local law enforcement agency, or a group of investigators assigned to the court prosecutor's offices.
The probation department is responsible in most jurisdictions.
Added: Rather than "most" I would probably say SOME. In other jurisdictions, the Sheriff's Dept., or the Prosecutor's Office, or even the Court itself, maintains a staff of investigators who have this responsibility.
why
When conducting a scientific investigation the first step is to do research. One must ask many questions and look up the background of their subject or object.
Experiment: the act of conducting a controlled test or investigation.
Check if the results are valid
When conducting an experiment in a laboratory environment, the person conducting the experiment and the Instructor or Principle Investigator are responsible for ensuring that appropriate safety procedures are followed.
the government
A criminal investigation officer is a law enforcement professional who is responsible for conducting investigations into criminal activities. They gather evidence, interview witnesses, analyze data, and work to solve crimes. Their goal is to gather enough evidence to build a case against suspects and ensure justice is served.
the thing that is responsible for conducting dissolved food substances is dissolved minerals in the water are deposited within the cells of these parts.
Fund holder
Commander
Commander
Commander