The aim is to examine how investigators in the police reproduce the interviewees’ utterances in narratives, direct and indirect reported speech, and by framing the words in reports with or without quotation marks. The focus is on the police’s professional writing and techniques of reproducing interviewees’ words in written texts. Questions are: What techniques do the police use in the written interview reports? How do the techniques convey evidentiality? A corpus on domestic violence is used with a theoretical foundation in critical discourse analysis, polyvocality and evidentiality. A new analytical framework for polyvocal texts is developed in terms of utterance, source and framer to pin down the evidentiality. The result shows that it is difficult to determine whether words placed within the quotation marks are verbatim or not. Another result shows that investigators are not consistent in documenting utterances from different sources, and they do not show whether the utterances are embedded or not and to what degree they are embedded. This makes it sometimes difficult to uncover the structure of the original events and to perceive who the source of the utterances is, which means that evidentiality is not always clear.