Weak global cues aggravated a dramatic selling across counters towards the end of trading today, dragging down the benchmark Sensex by over 200 points to extend losses for the second day in succession. The Bombay Stock Exchange 30-share index declined sharply to trade below 17K-level at one-week low of 16,997.86. The Sensex, however, managed to settle the day at 17,009.17, a fall of 213.84 points or 1.24 per cent over its last close. Similarly, the wide-based National Stock Exchange index Nifty dropped by 50.85 points to 5,063,60.