Mumbai:  Erasing initial gains, the Sensex was down by over 84 points after the Reserve Bank left the key interest rate unchanged today to fight inflation and lowered economic growth projection to 6.5 per cent for this fiscal.

RBI also pegged March-end inflation at 7 per cent, up from 6.5 per cent earlier.

The BSE 30-share barometer, which had added 55 points in opening trade, fell by 84.29 points at 17,059.