Indian equity markets were in a sea of red on Thursday as markets failed to get any relief from the government with regards to the FPI surcharge. The benchmark index BSE Sensex lost 587.44 points to close at 36,472.93, down by 1.59 per cent. The Nifty50 closed at 10,737.75, down by 180.95 points or 1.67 per cent as bears were in action throughout the day.