Which are permanent written records of the facts of a case to be used in further investigation in writing reports and in prosecuting the case?

Permanent written records of the facts of a case are known as case files or case documentation. These records typically include police reports, witness statements, forensic evidence, and legal filings. They serve as a comprehensive resource for further investigation, assist in writing reports, and provide essential information for prosecuting the case in court. Maintaining accurate and detailed case files is crucial for ensuring justice and accountability in the legal process.