New Delhi, Aug. 1 -- Wall Street stock indices slumped on Friday after weak jobs data fuelled worries about the US economy amid stiffer tariffs on American trading partners.

The Labor Department said the US economy added just 73,000 jobs in July while revising lower the figures for May and June.

At 9:52 AM ET, the Dow Jones Industrial Average fell 633.77 points, or 1.44%, to 43,491.55, the S&P 500 lost 107.59 points, or 1.70%, to 6,231.80 and the Nasdaq Composite lost 483.70 points, or 2.29%, to 20,638.74.

In the early trading, the Dow Jones Industrial Average was down 1.5% at 43,477.54. The S&P 500 declined 1.7% to 6,231.49, while the tech-rich Nasdaq Composite Index tumbled 2.3% to 20,644.16.

Following the jobs report, the yields on...