rome leader one italy big political party northern league criticize magistrates thursday genoa court freeze several bloc bank account matteo salvini speak reporters low house parliament say five party bank account freeze thursday follow july conviction party founder umberto bossi others illegal use party fund court genoa northern italy accept request prosecutors fraud case preventively freeze account source close matter tell reuters magistrates try outlaw political party salvini say try stop advance league reach historic high salvini say would meet party lawyers friday discuss fight seizure bossi long frontline politics remain influential figure party july genoa court say bossi use party fund pay family expense rule appeal definitive league would win 15 percent vote election hold recent poll show three time high fair 2014 european elections would make country third most-popular party national vote due early next year hundreds thousands boat migrants arrive italy past three years opposition northern league attack government european union handle immigration crisis time salvini try broaden appeal party found protest rome funnel taxpayer money under-developed south italy 's northern league criticize magistrates bank account freeze