Infosys dragged the benchmark indices lower following an anonymous whistle-blower complaint, which alleged that the company used irregular practices to shore up profits. The Sensex declined 334 points, or 0.9 per cent, to end at 38,963.84, while the Nifty slipped 74 points, or 0.63 per cent, to end at 11,588.
Infosys shed over 16 per cent, weighing the most on both gauges, and offsetting post-earning gains in HDFC Bank and Reliance Industries. It made a 451-point negative contribution to the Sensex.
This is the sharpest decline for the software exporter since April 2013, shows data compiled by Bloomberg.
Infosys plunged after a letter,