New Delhi/ Thiruvananthapuram, July 4 (ANI): Head of Forensic Department of All India Institute Of Medical sciences (AIIMS), Dr Sudhir Gupta, said that he was prepared to impart any information required in mysterious death case of Sunanda Pushkar, wife of Congress leader Shashi Tharoor. Speaking to mediapersons in New Delhi on Friday, Dr Gupta said that the postmortem report of Pushkar was authentic. BJP leader Subramaniam Swamy had also alleged the involvement of few politicians in the case and demanded a trial by the Supreme Court. Earlier, Gupta had claimed he was pressurised to tamper with the post-mortem report of Pushkar, who died under mysterious circumstances in a posh New Delhi hotel on January 17 this year. However, later Dr. Gupta said the post-mortem report by him was authentic.