European stock markets drop amid Greece fallout

European stock markets fell on Tuesday as investors reacted to the fallout from Greece, with focus on the banking sector. London's benchmark FTSE 100 index slipped 0.23 percent to stand at 6,673.53 points in midday deals. Frankfurt's DAX 30 dropped 0.35 percent to 11,403.80 points and the CAC 40 in Paris lost 0.67 percent to stand at 5,086.04 compared with Monday's close.