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Wall St. falls on Fed rate hike worry

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., May 16, 2016. REUTERS/Brendan McDermid

NEW YORK (Reuters) - The S&P 500 fell to its lowest level since March on Thursday as Wall Street became more worried that the U.S. Federal Reserve might raise interest rates as early as June.

The Dow Jones industrial average (.DJI) fell 91.42 points, or 0.52 percent, to 17,435.2, the S&P 500 (.SPX) lost 7.61 points, or 0.37 percent, to 2,040.02 and the Nasdaq Composite (.IXIC) dropped 26.59 points, or 0.56 percent, to 4,712.53.

(Reporting by Chuck Mikolajczak; Editing by Nick Zieminski)