New Delhi, July 02 (ANI): Delhi Police Commissioner BS Bassi on Wednesday assured full investigation of the mysterious circumstances surrounding the death of Congress leader, Shashi Tharoor's wife, Sunanda Pushkar. The statement was made in wake of the Head of the forensic department of India's specialty hospital, All India Institute of Medical Sciences (AIIMS), Dr. Gupta revealing that he was compelled to submit a fabricated report in the Sunanda death case. Bassi said that police will take all necessary steps to go into the root of the mystery. When asked whether Tharoor will also be questioned, he said whatever is necessary will be done.