Officials at the Federal Reserve are committed to considering raising interest rates on a "meeting-by-meeting basis" despite some concerns about financial turmoil in Greece and China, minutes from the central bank's June monetary policy meeting show.

The account of Fed members' discussion at the June meeting published Wednesday said that Chairwoman Janet Yellen and her colleagues view "economic conditions as continuing to approach those consistent with warranting a start to the normalization of the stance of monetary policy."

The Fed maintained its target of zero for short-term interest rates at the June meeting. It has held rates near zero since 2008 in an effort to stimulate the economy.

Yellen and other officials have said that they are likely to raise rates sometime this year, but recently investor expectations have been pushed back to at least the end of the year in response to the U.S. economy underperforming in the first half of the year and economic problems overseas.

Fed officials are also wary of those developments, the minutes show: Some "mentioned their uncertainty about whether Greece and its official creditors would reach an agreement and about the likely pace of economic growth abroad, particularly in China and other emerging market economies."

Those fears, though, are not sufficient to prevent the Fed from tightening monetary policy.

At a press conference following the June meeting, Yellen said the "United States has very limited direct exposure to Greece."

The Fed members mostly guessed that the rocky start to economic growth in the first half year was an aberration and that growth and job gains will pick up the rest of the year.

Notably, the unnamed officials cited a "firming of wage increases," a development that they had not seen during the recovery.

Yellen has indicated that wage gains would be evidence that the conditions for the Fed to raise rates — greater employment and inflation rising toward the Fed's 2 percent goal — were on track to be met. She also has said, however, that faster wage growth is not necessary for the Fed to act.