On Monday, Indian equity markets witnessed a bloodbath with heavy selling pressure. Frontline indices Nifty 50 and Sensex plunged by 2.18 per cent and 2.09 per cent each to close the session at 16,614.20 and 55,822.01 respectively. BSE Small-cap index fell by 3.31 per cent to end the first trading session of the week at 27,514.42.