India, July 1 -- Benchmark stock indices Sensex and Nifty declined on Tuesday due to selling in IT, oil & gas and select banking shares amid uncertainty over the next round of US-Iran negotiations in Doha.

The 30-share BSE Sensex declined 249.70 points, or 0.33 per cent, to settle at 76,478.67, paring its opening gains. During the day, it fell by 398.98 points, or 0.51 per cent, to a low of 76,329.39.

The 50-share NSE Nifty dropped 80.50 points, or 0.34 per cent, to end at 23,865.75. The delayed onset and sluggish progress of the southwest monsoon, fresh foreign fund outflows and decline in blue-chip IT stocks weighed on market sentiment, analysts said.

Among Sensex shares, Infosys, Tata Consultancy Services, HCL Tech, Tech Mahindra, I...