U.S. stocks fell on Friday to close out the worst week since January as news of a criminal probe into Goldman Sachs unnerved investors already anxious about the prospects for heavy regulation from Washington.

The Dow Jones industrial average <.DJI> fell 158.71 points, or 1.42 percent, to close unofficially at 11,008.61. The Standard & Poor's 500 Index <.SPX> lost 20.09 points, or 1.66 percent, to finish unofficially at 1,186.69. The Nasdaq Composite Index <.IXIC> gave up 50.73 points, or 2.02 percent, to close unofficially at 2,461.19.

(Reporting by Leah Schnurr; Editing by Jan Paschal)

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