Brahmapur: A three-member committee constituted by the Odisha government Wednesday began its investigation into the alleged circulation of medical postgraduate (PG) examination question paper in the state, officials said. The officers did not disclose the contents of the discussion with the medical college authorities. A total 154 students have appeared for the exam in MKCG Medical College and Hospital, officials said. It was alleged that the question paper was circulated from MKCG Medical College and Hospital. The college committee has already conducted the inquiry by talking to students and others, sources said.