A student from Hyderabad studying in North Carolina University in the US committed suicide after scoring low marks in exams, according to information reaching his family here.Shiva Kiran (23) ended his life by hanging from the ceiling fan in his room in the university hostel on Thursday. The authorities in the US informed the distraught family on Friday.He had taken admission in the university six months ago and was scheduled to come to Hyderabad. The family lives at Indira Nagar in Ramanthapur area.Shiva Kiran, who did mechanical engineering from a college here, was apparently depressed after he failed to secure better grade in the recent exam.The family has appealed to the state and central governments to help bring his body home.