But the agency said there were many other incidents of boats arriving with many dead—one with 63 dead on board and seven survivors, and others in which survivors arrive saying dozens have died at sea, but can't be verified because the bodies are never found.
“Here it is all within 600 meters (650 yards) of shore and we will have more clarity,” said Laurens Jolles, the UNHCR representative in Italy.
Thousands make the perilous crossing each year, seeking a new life in the prosperous European Union.
Smugglers charge thousands of dollars a head for the journey aboard overcrowded, barely seaworthy boats that lack life vests.
Each year hundreds die in the crossing.
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