The Sensex has extended losses and is now down 132 points at 13,025.Hero Honda has tumbled over 4% to Rs 712. Dr.Reddy's, Reliance Communications and HDFC have shed 2.5% each to Rs 771, Rs 377 and Rs 1,521, respectively.Reliance, Bajaj Auto and NTPC have dropped around 2% each to Rs 1,262, Rs 2,664 and Rs 129, respectively.Hindalco, ONGC, Bharti Airtel and Larsen & Toubro have declined around 1.5% each to Rs 188, Rs 843, Rs 535 and Rs 1,303, respectively.ITC, Maruti, BHEL, Satyam and Grasim are the other major losers.Infosys has advanced 1.6% to Rs 2,136. Reliance Energy is up nearly 1% at Rs 511.Out of 2,464 stocks traded so far, 1,649 have declined, 748 have advanced and the rest are unchanged.