Greek bond yields hit record 7.322 percent .

The yield on Greece's 10-year sovereign bond soared to 7.322 percent Thursday, the highest since the country adopted the euro in 2001, amid mounting fears it might be unable to repay huge debts.
The spread or differential with the benchmark German Bund widened to 4.24 percentage points, likewise a record.
The spread means that Greece must offer investors an interest rate on any new bonds that is 4.24 percentage points higher than that of Germany, the eurozone's leading economy.