Abstract:
This research deals with speech act which is mainly aimed to investigate
the used of speech act by police investigator in interrogation of drug cases at
Polres Langkat. This research was applied by descriptive qualitative. The results
presented in form of description the findings and the reseacher make accurate
explanation about the analysis that found in the research. The researcher found 25
speech acts and 3 types of speech act by police investigator in interrogation of
drug cases at Polres Langkat with the duration 16 minutes. The dominant types of
speech acts that found in interrogation drug cases by police investigator at Polres
Langkat was representatives act, however expressives and commisives act was not
found.