The Indian equity benchmarks edged lower on Thursday ahead of expiry of weekly index futures and option contracts dragged down by weakness in Infosys, Reliance Industries, HDFC Bank and Sun Pharma. However, the losses were capped owing to buying interest in Bajaj Finance, State Bank of India, ITC and Bharti Airtel. The Sensex fell as much as 214 points and Nifty 50 index held on to its important support level of 17,900.