“They are considered fugitives from Italian justice.”
These means they cannot go anywhere in Europe, or anywhere else that has an extradition treaty with Italy, without facing possible arrest and extradition to Italy.
Not quite yet. This judge has already asked the Italian state government to issue an extradition request for all these men. So far, the Italian state government has denied this request. Until Interpol receives either a request for extradition, or a request for provisional arrest from the Italian government, no arrest will be made in the European Union, per the European extradition treaty.
Of course, that wouldn't keep another non-European country from arresting them if they could. So, clearly these men have to be careful where and when they travel abroad.