Heavy selling in IT weighs down Indian stock indices; Sensex falls 558 points

Heavy selling in IT weighs down Indian stock indices; Sensex falls 558 points
Sensex closed at 83,674.92 points, down 558.72 points or 0.66 per cent, while Nifty closed at 25,807.20 points, down 146.65 points or 0.57 per cent.