article_snippet.sent: A migrant looks on after disembarking from a tug boat in Trapani .
article_snippet.sent: Migrants are transferred to holding centres after landing in Augusta's port, near Siracusa, Sicily . '
article_snippet.sent: The 15 migrants arrested over the attack on The 15 migrants  arrival in Palermo are from the Ivory Coast, Senegal, Mali and Guinea Bissau.
article_snippet.sent: The revelation about last week's incident follows news than more than 700 migrants are feared dead after a boat heading for Malta sank in the Mediterranean this weekend.