Global stock markets fell and high-yielding currencies lost value on Friday, even as central banks pumped extra cash into the financial system to help temper fears of a liquidity crisis gripping investors.

World-wide, central banks have injected at least $326 billion into their financial systems in the past 48 hours in an effort to prevent a global liquidity crunch that has its roots in the riskiest end of the US mortgage market.

Copyright Reuters, 2007