This legal writing by title The Implementation of Investigation towards the
Members of Indonesia Police Force Who Conduct Criminal Action was conducted
to answer the given legal problem i.e. how is the implementation of investigation
towards the member of Indonesia Police Force who conduct criminal action and
whether there any barriers to the investigatior in conducting investigation towards
the legal writing was juridicial normative legal research. The data source used was
secondary data as primary as data comprising of primary legal source and
secondary legal source. The method of data collection used was literary study
towards the regulations relating to primary legal research and secondary legal
source and also collected the books and interview towards the source person
relating the research or legal writing. Based on result of this research and
cumulative analysis of which was conducted by the outhor concerning on the
investigation towards the Members of Indonesia Police Force who conduct
criminal action, the outhor concluded that the investigation towards the Members
of Indonesia Police Force who conduct criminal action, the implementation is not
different to the implementation of investigation on general society, however there
is particularity in the implementation of investigation towards the Members of
Indonesia Police Force who conduct criminal action, i.e. followed by the
disciplinary regulation and Police ethical code. In the implementation of
investigation, there are also barriers, i.e. the lack of verification material and
witness, and it needs longer time