French and Italian police have arrested 11 people in a joint operation against groups suspected of helping fund Islamic terrorism.
French and Italian police co-ordinated their operations
The suspects, who are mainly Algerian, were detained during raids near Naples, Milan and Marseille.
The suspects are thought to have links to the Salafist Group for Preaching and Combat - an armed splinter organisation operating mainly in eastern Algeria.
They are also alleged to be involved in forgery and illegal immigration.
The Salafist group is known to have links to al-Qaeda.
Italy has been on a state of high alert since the beginning of the year.
During the Italian election campaign, Interior Minister Giuseppe Pisanu announced that the authorities had foiled two planned terrorist attacks, one on the underground in Milan and the other on a church in Bologna.