Treasurys rose as reports showed jobless claims reached the highlest levels in six weeks.
The 10-year yield dropped six basis points, or 0.06 percentage points, to 1.88%.
"The higher claims is probably the most disturbing news," said Ira Jersey, an interest-rate strategist in New York at primary dealer Credit Suisse Group AG. "Core inflation being so low means it may be difficult to think there will be inflation pressures. The Fed is justified in continuing its asset-purchase program and easy monetary policy."