U.S. stocks fell on Friday, weighed down by euro-zone debt worries, and retailers lost ground after a weak profit outlook from Gap.

The Dow Jones industrial average <.DJI> dropped 93.28 points, or 0.74 percent, to end unofficially at 12,512.04. The Standard & Poor's 500 Index <.SPX> fell 10.33 points, or 0.77 percent, to finish unofficially at 1,333.27. The Nasdaq Composite Index <.IXIC> lost 19.99 points, or 0.71 percent, to close unofficially at 2,803.32.

For the week, the Dow fell 0.67 percent, the S&P slipped down 0.34 percent and the Nasdaq lost 0.89 percent.

(Reporting by Rodrigo Campos; Editing by Jan Paschal)