WASHINGTON — The Federal Reserve struck a more cautious tone about the strength of the U.S. economic recovery, indicating Europe's debt crisis poses a risk to it.

Wrapping up a two-day meeting Wednesday, the Fed in a 9-1 decision retained its pledge to hold rates at record-low levels for an "extended period." Doing so will energize the rebound.

The Fed expressed confidence that the recovery will stay intact despite headwinds from abroad and at home. But Chairman Ben Bernanke and his colleagues offered a slightly more reserved outlook than the last time they convened.

The Fed said the economic recovery is "proceeding." That was a bit less upbeat than the view at the April meeting when the Fed said economic activity continued to "strengthen."

The Fed also said the labor market is "improving gradually."

While not mentioning Europe by name, the Fed said "financial conditions have become less supportive of economic growth ... largely reflecting developments abroad."

Stock investors had little reaction to the news. The Dow Jones industrial average fell about 10 points after being relatively flat before the announcement.

The decision to keep rates at record lows boosted demand for safe-haven assets like Treasurys, sending interest rates lower. The yield on the 10-year Treasury note, a widely used benchmark for mortgages and other consumer loans, fell to 3.13 percent from 3.25 percent late Tuesday. The 10-year note hasn't closed at that level in more than a year. Rates had already fallen earlier in the day after the government said new-home sales dropped 33 percent last month.

Thomas Hoenig, president of the Federal Reserve Bank of Kansas City, for the fourth straight meeting was the sole member to dissent from the Fed's decision to retain the "extended period" pledge.

Hoenig fears keeping rates too low for too long could lead to excessive risk-taking by investors and feed new speculative bubbles in the prices of stocks, bonds and commodities.

He's also expressed concern that low rates could eventually unleash inflation.