ROME (AP) — A boat carrying nearly 100 migrants capsized Wednesday in international waters off the Italian island of Lampedusa, killing at least 20 people and leaving a dozen missing, the U.N. refugee agency and local officials said.

Sixty survivors were brought to a center in Lampedusa, said a UNHCR spokesman in Italy, Filippo Ungaro. According to survivor accounts, there were 92 to 97 migrants on board when the boat departed Libya. Authorities have recovered 20 bodies, and were searching for another 12 to 17 survivors, according to the UNHCR.

It was not immediately known how long the migrants had been at sea. Lampedusa Mayor Filippo Mannino said the shipwreck happened “presumably at dawn.”

According to the UNHCR, 675 migrants have died making the perilous central Mediterranean crossin

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