Wall Street tumbled on Friday after the Shanghai Composite index plunged 5.2 percent on speculations that China may raise interest rates.
U.S. stocks opened lower as markets were pressured by speculations that China might take further monetary-policy tightening measures to counter inflation challenges.
Meanwhile, worries about the European debt problems continued to weigh on the market. There are mounting speculations that the debt problems in Ireland have been out of control and the government will have to ask for international aid, just as Greece did earlier this year.
The Dow Jones industrial average fell 90.52, or 0.80 percent, to 11,192.58. The Standard & Poor's 500 index dropped 14.33 points, or 1.18 percent, to 1,199.21 and the Nasdaq was down 37.31 points, or 1.46 percent, to 2,518.21.
