US shares have closed mixed after the Federal Reserve indicated that problems in Europe pose a threat to the US economy and that it would keep interest rates low.
Following a meeting on interest rates, the Fed said overnight that "financial conditions have become less supportive of economic growth".
The central bank cited what it called "developments abroad" but didn't mention Europe by name.
The Fed says it will hold down rates to help a recovery.
The Dow Jones industrial average is up 5 points at 10,298. The Standard & Poor's 500 index is down 3 at 1092. The Nasdaq composite index is down 8 at 2254.
Falling stocks narrowly outpaced gainers on the New York Stock Exchange. Volume came to 1.1 billion shares, even with yesterday.
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European debt worries worldUS stocks hold gains after bailout