Mumbai, July 23 -- Key benchmark indices extended losses for a fourth straight session on Thursday. Rising crude oil prices and escalating geopolitical tensions in the Middle East weighed on investor sentiment. The Nifty settled below the 23,900 level. Broader indices also declined, with the Midcap and Smallcap indices losing 1% each. Sectoral weakness was broad-based, led by realty, oil & gas, infrastructure and PSU banks, while auto and media were the only gainers. The Nifty has turned technically weak, with immediate support seen around 23,750-23,780 and resistance near the 24,000 mark.

The S&P BSE Sensex slipped 363.66 points or 0.47% to 76,391.39. The Nifty 50 index fell 126.65 points or 0.53% to 23,896.60. Over four consecutive ses...