An investigation may briefly explain about a specific investigation. It may be about a crime or any other investigation regarding business. A well-written and accurate criminal investigation report is crucial to the future of a criminal case, as it will be cited by countless attorneys and law enforcement personnel as a case moves forward in court. To write investigation report, you first have to mention the purpose of the investigation report. Then mention what is being investigated. If its a person, mention all the details you know. After investigation, write the points that were of significance and in the opinion or conclusion section mention what the findings were. Investigative report templates are available on many websites on the Internet. You can easily download them and easily prepare a best investigation report by yourself.