Nearly 1,500 people were rescued by the Italian Coast Guard and European Navy ships on Thursday.
Two rubber dinghies packed with 269 people were brought to the Italian island of Lampedusa on Thursday evening.
Meanwhile, a photographer from the Associated Press news agency said authorities have been collecting the bodies of people who drowned off the Libyan coast on Thursday.
Two boats, one carrying 50 passengers and another carrying around 400 people, were reported to have sunk off Libya.
A Swedish coastguard ship brought the corpses of victims and hundreds of survivors to Palermo, Sicily.
Italian police have detained ten people on suspicion of multiple homicide after 52 migrants were found dead in the hull of a boat this week.
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