Plagiarism is a serious problem in an academic environment because it breaches academic honesty and integrity, copyright law, and publication ethics. This paper aims at revealing English as a Foreign Language (EFL) lecturers' responses in dealing with some factors affecting students' plagiarism practice in Indonesian Higher Education context. This study employed a qualitative method with case study approach. Eight experienced EFL lecturers were conveniently recruited, and the data were analyzed using thematic analysis technique. The results revealed that EFL students perpetrated plagiarisms due to three factors; 1) convenient access to online resources allowed the EFL students to retrieve some information without properly citing the sources, 2) Questionable lecturers' assessment, and 3) Student has poor academic writing-skills. The plagiarism practices are apparent in the Indonesian educational context, and this may produce other negative consequences, such as academic dishonesty and poor academic writing. However, further investigation is necessary to examine the relative contribution of each factor on students' plagiarism practice.