Mumbai, Aug. 24 -- Benchmark domestic equity indices closed lower on Monday, as investors remained cautious ahead of fresh US sanctions on Iran, while elevated crude oil prices and rising domestic bond yields continued to weigh on market sentiment.

The Nifty 50 index closed at 24,219.05, declining 32.95 points or 0.14 per cent, while the BSE Sensex ended at 77,370.13, down 171.70 points or 0.22 per cent.

According to Vinod Nair, Head of Research, Geojit Investments Limited, caution dominated the market as investors awaited fresh sanctions from the US on Iran.

"Caution dominated market sentiment as investors are awaiting fresh sanctions from the US on Iran later today. Brent crude eased on profit-taking but remained above the $90/bbl ma...