MUMBAI: Indian equity markets opened on a weak note on Thursday, as investors are cautious about the prospects of a US strike and the uncertain nature of Iran's response.

The Nifty 50 index opened at 24,803.25, down by 8.80 points or 0.04 per cent. Similarly, the BSE Sensex opened lower at 81,403.94, losing 40.72 points or 0.05 per cent.

Market experts have attributed the cautious sentiment to the possibility of an escalating conflict in the Middle East and fears of a direct US entry into the situation. If such a scenario unfolds, heavy selling pressure may be witnessed in global markets.