New Delhi, Jan 20 (ANI): Politicos on Tuesday react as Delhi Police drilled Shashi Tharoor for almost four hours in Sunanda Pushkar murder case. BJP leader Subramanian Swamy said that Pushkar should have been questioned way before as he is the main witness in the case. He said that the UPA government had already delayed the probe in the case and now it should pick up speed. Congress leader Abhishek Manu Singhvi said that BJP should stop speculating in criminal proceedings and that investigation is on. NCP Leader Tariq Anwar said that it is good that Tharoor cooperated in questioning and the law will take its own course.