Mumbai: The Bombay Stock Exchange benchmark Sensex fell by 66 points in opening trade on Tuesday, extending its losses for the third straight day on continued selling by funds, tracking a weak trend in the Asian region.

The 30-share Sensex, which lost over 546 points in the previous two sessions, moved down further by 65.70 points, or 0.41 percent, to 16,085.75 in opening trade.

In a similar fashion, the wide-based National Stock Exchange Nifty index shed another 15.95 points, or 0.33 percent, to 4,833.55.
Stocks of realty, bank and metal companies remain under selling pressure and were mainly responsible for the Sensex's decline.

Market experts said continued selling by funds amid a weakening trend on other Asian bourses following overnight losses in the US dampened the trading sentiment here.

In the Asian region, Japan's Nikkei index was trading 1.95 percent down, while Hong Kong's Hang Seng index shed 1.49 percent in early trade. In the US, the Dow Jones Industrial Average down by 2.36 percent in the previous session.