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At 9:17 a.m. (0347 GMT), the 30-share BSE index was down 0.58 percent at 16,833.74 points, with all but three of its components falling.
The broader 50-share NSE index was down 0.69 percent at 5,049.55.
GVK Power & Infrastructure rose 6 percent after it agreed to pay $1.26 billion for some assets of Australia's Hancock Group.
Copyright Reuters, 2011