Sensex tanks again, down 1,716pts

The Sensex is now down 1,716 points at 15,889.

The NSE Nifty is down 587 points at 4,622.

Mahindra & Mahindra has crashed 19% to Rs 545. Reliance Energy has tumbled 15.3% to Rs 1,504.

DLF has slumped over 13% to Rs 785. Reliance Communications has shed 12% at Rs 540.

Ambuja Cements and HDFC have dropped 11% each to Rs 113 and Rs 2,400, respectively.

Tata Motors, Tata Steel, Larsen & Toubro and ONGC are down over 10% each at Rs 585, Rs 648, Rs 3,315 and Rs 1,001, respectively.