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Patrol helicopters identified the overcrowded rafts on Wednesday and four navy vessels participated in the rescue which ended early on Thursday (local time), a statement said. The navy gave no details about the nationalities of the migrants.
Italy is a major gateway into Europe for migrants, and sea arrivals more than tripled in 2013 from the previous year, fuelled by Syria's civil war and strife in the Horn of Africa.
In October, 366 Eritreans drowned in a shipwreck near the shore of the Italian island of Lampedusa, which is located about halfway between Sicily and Tunisia. More than 200, mostly Syrians, died in another shipwreck a week later.
Over the past two decades, Italy, Greece and the Mediterranean island of Malta have borne the brunt of migrant flows and have urged the EU to make a more robust and coordinated response.