Dow and S&P fall 1 percent; Nasdaq turns negative
U.S. Treasuries also fell.
The Dow Jones industrial average was down 92.87 points, or 1.10 percent, at 8,380.62. The Standard & Poor's 500 Index was down 7.71 points, or 0.85 percent, at 902.62. The Nasdaq Composite Index was down 4.28 points, or 0.24 percent, at 1,746.15.
(Editing by Padraic Cassidy)