who is typically responsible for preparing the presentence investigation report
Presentence investigation report Whether interviewing or reviewing documents, the probation officer must weigh the evidence based on the best available information. The final report must contain only accurate information. The goal is to produce a report that the court may rely upon at sentencing. Though it is inevitable that there will be data that the probation officer is unable to verify, that information should be clearly identified. The probation officer must distinguish between facts and the inferences, opinions, or conclusions based upon those facts.
Crime lab The Los Angeles Police Department founded the first crime laboratory in the United States (1923), followed by the Bureau of Investigation (1926), forerunner to the Federal Bureau of Investigation. (Every Contact Leaves a Trace, Connie Fletcher, St. Martin's Press, New York, 2006, interview with crime lab director)