The Bombay Stock Exchange benchmark Sensex tumbled over 336 points at midsession on Friday on aggressive selling by funds following the Satyam Computer crisis.

The Sensex, which had lost substantial ground in the previous trading session, dropped further by 336.06 points at 9,250.82 at 1330 hrs following a steep fall in stocks of Satyam Computer, Larsen and Toubro and Reliance Communications and BHEL.