The Sensex is now down 245 points at 10,433.ONGC has plunged over 5% to Rs 1,051. Dr.Reddy's, HLL and Reliance Communications have shed over 4.5% each to Rs 1,244, Rs 232 and Rs 257, respectively.Tata Motors, Satyam and Reliance Energy have slipped over 4% each to Rs 708, Rs 692 and Rs 428, respectively. HDFC has dropped 3.5% to Rs 1,103.Bajaj Auto, Maruti, Bharti Airtel and Maruti are down over 3% each.Out of 2,360 stocks traded so far, 1,481 have declined, 797 have advanced and the rest are unchanged.