Sensex on Monday cracked a new low in three years when it crashed below 8,000 points to 7,985.43, as funds remained aggressive sellers.

The Sensex plunged by 723.12 points at 1245 hrs, with almost all the sectorial indices moving in the negative zone. The key index last saw this level on November 1, 2005.

Similarly, the wide-based National Stock Exchange index Nifty tumbled by 243.75 points to 2340.25 at the same time.