Wall Street fell as concern about the intensifying tension between the West and Russia over Ukraine overshadowed better-than-expected US jobs data and American corporate earnings including from 21st Century Fox.
In late afternoon trading in New York, the Dow Jones Industrial Average fell 0.38 per cent, the Standard & Poor's 500 Index slid 0.34 per cent, while the Nasdaq Composite Index retreated 0.15 per cent. Investors fled into the perceived safety of US Treasuries and gold instead.
Declines in shares of UnitedHealth and those of Procter & Gamble, down 2.3 per cent and 1.1 per cent respectively, propelled the Dow lower.
"The uncertainty over the situation in Ukraine has overshadowed the positive economic data that we saw earlier today," John Manley, chief equity strategist at Wells Fargo Funds Management in New York, told Bloomberg News.
Indeed, the latest data underpinned the view that the US labour market continues to improve. Initial claims for unemployment benefits posted a surprise drop, sliding by 14,000 to a seasonally adjusted 289,000 for the week ended August 2, a Labor Department report showed.