Wall Street sinks as China turmoil hits global shares


Wall Street shares closed sharply down after the suspension of trading on Chinese markets for the second time this week spread alarm among investors.

After Asian and then European stock markets fell, Wall Street's Dow Jones and S&P 500 indexes shed 2.3%.

Earlier, circuit-breakers triggered a suspension in Chinese trading following a 7% fall in the country's main index.

Later on Thursday, the Chinese authorities said they were suspending the circuit-breaker system.