The Sensex is now down 359 points at 10,319.ONGC and Reliance Communications have dropped over 7% each to Rs 1,029 and Rs 249, respectively. Dr.Reddy's has plunged 6.5% to Rs 1,220.Tata Motors and Satyam have shed 5.5% each to Rs 698 and Rs 682, respectively.Reliance Energy and Maruti have slipped 5% each to Rs 423 and Rs 755, respectively.HDFC, HLL and Bajaj Auto are the other major losers.All index stocks are now in negative zone.Out of 2,416 stocks traded so far, 1,678 have declined, 672 have advanced and the rest are unchanged.