NEW YORK, Feb 23 (Reuters) - The Nasdaq fell more than 1 percent and the Dow and S&P 500 added to losses at midday on Wednesday as oil prices climbed further, keeping concern about unrest in Libya high on Wall Street's agenda.
The Dow Jones industrial average fell 68.76 points, or 0.56 percent, to 12,144.03. The Standard & Poor's 500 Index dropped 7.42 points, or 0.56 percent, to 1,308.02. The Nasdaq Composite Index slid 31.08 points, or 1.13 percent,to 2,725.34. (Reporting by Caroline Valetkevitch; Editing by Jan Paschal)