Rape is a serious crime and is a huge problem in Ethiopia. It has a devastating effect on the victim and society as a whole. The Ethiopian news is peppered with reports of this crime. Anorganized and sophisticated way in which the perpetrators of rape can be identified is by the use of modus operandi information. The aim of this research is to evaluate how modus operandi can be used as a perpetrator identification technique in the investigation of rape cases in the Gulele policing area. For any investigation to be successful, the investigator must have the objectives of crime investigation in mind. In the investigation of crime, the collection of evidence is important and there are two basic important principles, namely Locard’s principle and the chain of custody that investigator must comply with. These will ensure that evidence is admissible during a trial. Evidence is found on a crime scene. In rape cases, the body of the perpetrator and the victim can be seen as the crime scene. For evidence to be applicable to the investigation, it must first be identified and then individualised. It is important for investigators to be familiar with the concept of modus operandi, and the influencing factors. The purpose of this research is to provide practical recommendations on the best practices for the use of modus operandi. / Police Practice / M. Tech. (Forensic Investigation)