Benchmark stock indices Sensex and Nifty closed nearly 1 percent lower on Monday as the failure of US-Iran negotiations heightened concerns of a prolonged conflict driving crude oil prices sharply higher.
The 30-share BSE Sensex tumbled 702.68 points or 0.91 percent to settle at 76,847.57.
During the day, it dived 1,681.93 points or 2.16 percent to 75,868.32.
The 50-share NSE Nifty plunged 207.95 points or 0.86 percent to end at 23,842.65.
From the 30-Sensex firms, Maruti, InterGlobe Aviation, Bajaj Finance, Reliance Industries, Tata Consultancy Services and HDFC Bank were the biggest laggards.