MUMBAI: The benchmark BSE Sensex slipped into negative terrain and plunged almost 228 points to 26,164.82 on selling pressure soon after the Reserve Bank surprisingly kept short term lending rate unchanged and lowered the forecast for GDP growth rate to 7.1 per cent.
Meanwhile, the NSE Nifty cracked below the 8,100-mark.
The Sensex, which gained over 148 points in the early trade, fell by 227.94 points, or 0.86 per cent, to 26,164.82 in post RBI policy trade after the central bank maintained the key lending rate at 6.25 per cent in its 5th bi-monthly monetary policy review today, the first after demonetisation.
The gauge had gained 162.10 points in the previous two sessions.
Similarly, the NSE index Nifty was trading 65.65 points, or 0.80 per cent down at 8,077.50.
The BSE banking index was down 1.91 per cent to 26,672.93, while the realty index was quoting lower by 1.34 per cent to 1,262.29.
Brokers said RBI's surprise decision to keep key interest rate unchanged and lowering GDP growth rate to 7.1 per cent, triggered across-the-board selling, pulling down the key indices into negative territory.
RBI Governor Urjit Patel kept the key policy rates unchanged even as the central bank lowered GDP growth rate.
All six members of the Monetary Policy Committee (MPC) voted in favour of status-quo.
The central bank left the short-term lending rate or repo rate unchanged at 6.25 per cent, and the cash reserve requirement at 4 per cent. The RBI also lowered the growth estimate at 7.1 per cent for 2016-17 from earlier projection of 7.6.