Over Easter weekend, rescue ships plucked some 8,360 people from 55 different rubber dinghies and wooden boats off Libya's coast, Italy's coast guard said. Thirteen bodies were also recovered.
While such numbers are not unheard of for this time of year, they come as Italy is preparing to deliver patrol boats to Libya as part of a new European Union-blessed migration deal.
EU leaders hailed the accord as a new commitment to save lives and stem the flow of illegal migration to Europe, where the refugee influx has become a heated political issue.
Aid groups have criticized the accord as hypocritical and cruel, arguing that migrants who already have endured grave human rights abuses in Libya will face renewed violence, torture, sexual assault and other abuse if they are returned by the Libyan coast guard.
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The United Nations refugee agency also cited the pending arrival of Italian patrol boats as a possible cause for the weekend's high numbers, although spokeswoman Barbara Molinario said it was too early in the season to identify trends.
Overall, Some 35,700 people have been rescued in the central Mediterranean route in 2017, up from 24,974 in 2016, the United Nations High Commissioner for Refugees said.
Molinario noted that the numbers are constantly in flux and a week or two of poor weather could cause fewer people to make the dangerous journey.