MUMBAI: Benchmark indices Sensex and Nifty tumbled in early trade on Friday as relentless foreign fund outflows and weak trends in global markets hit investors' sentiment.

The 30-share BSE Sensex tanked 631.93 points to 82,679.08 in early trade. The 50-share NSE Nifty declined 184.55 points to 25,325.15.

From the Sensex firms, Bharti Airtel, HCL Tech, Tech Mahindra, NTPC, Tata Consultancy Services and Maruti were among the biggest laggards.

However, ITC, ICICI Bank, Eternal and Power Grid were among the gainers.

In Asian markets, South Korea's Kospi, Japan's Nikkei 225 index and Hong Kong's Hang Seng index traded sharply lower. Shanghai's SSE Composite index quoted marginally down.

US markets ended significantly lower on Thursday.

Foreign Institutional Investors (FIIs) offloaded equ

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