Mumbai, Apl 23 - All-round selling from operators due to fall in global markets pulled down the BSE benchmark sensex by yet another 277 points to finish at 17,096.68.

India's second largest software services exporter by revenue, Infosys, ended lower by 3.92 per cent on reports that the company is under scrutiny from US authorities for likely errors in employer eligibility documents of its staff.

Shares of DLF fell more than 4 per cent after the Bombay Stock Exchange (BSE) said that pharma major Dr Reddy's Laboratories will replace realty major DLF in the benchmark 30-share Sensex.

The BSE benchmark sensex resumed lower at 17,347.76 and hovered in range of 17,444.18 and 17,056.77 before ending the day at 17,096.68, showing a net loss of 277.16 points or 1.60 per cent from its last weekend's level.

The NSE 50-share Nifty also dropped by 90.25 points or 1.71 per cent to finish at 5,200.60.

The market may remain volatile this week as traders roll over positions from the near-month April 2012 series to May 2012 series. The April 2012 derivatives contracts will expire on Thursday, April 26.

Asian stocks ended lower amidst volatility after a preliminary reading of China's manufacturing activity showed further contraction in April, although at a slower pace. Key benchmark indices in China, Hong Kong, Japan, Singapore, South Korea and Taiwan were down by between 0.10 pct to 1.84 pct. PTI