By Junko Fujita
TOKYO, April 2 (Reuters) - Japanese government bond yields jumped on Thursday after an auction for the 10-year bond saw weak demand.
The 10-year JGB yield JP10YTN=JBTC jumped 8 basis points to 2.38%. Yields move inversely to bond prices.
The 10-year yield had fallen for three straight sessions through Wednesday, after hitting a 27-year high at 2.39% on Monday.
Strategists were cautious that the rise in bond prices could hurt demand at the benchmark bond auction.
The five-year bond yield JP5YTN=JBTC rose 5 bps to 1.78%.
The auction's bid-to-cover ratio, a measure of demand, was 2.57 times, compared with 3.3 times at the previous sale.
The two-year bond yield JP2YTN=JBTC rose 2.5 bps to 1.37%.
The 30-year bond yield jumped 9 bps to 3.705%.