Oct. 10 (Bloomberg) -- India’s 10-year bonds dropped, pushing yields to the highest level since August 2008, after underwriters purchased unsold debt at an auction on Oct. 7, fueling speculation demand for the notes is weakening.

The yield on the 7.80 percent note due April 2021 rose 12 basis points to 8.70 percent as of 9:10 a.m. in Mumbai, according to the central bank’s trading system.

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