New Delhi, Feb 25 (ANI): Indian activists called for fair and time bound probe as Rajendra Pachauri quit as chair of the U.N. panel of climate scientists, ending 13 years in charge of the Nobel Peace Prize-winning group, after a sexual harassment complaint against him. Pachauri, 74, has denied the allegation. Meanwhile, social activists said that justice should be ensured to the complainant in a time bound manner. The IPCC appointed vice-chair Ismail El Gizouli as acting chair and promised business as usual.