GENEVA — At least 73 Europe-bound migrants are missing and presumed dead in a shipwreck off Libya, the United Nations migration agency said Wednesday.

The U.N. International Organization for Migration said in a statement that the wreck took place Tuesday, and that Libya authorities have retrieved at least 11 bodies.

It said the boat, carrying around 80 migrants, reportedly departed the village of Qasr al-Khayar, 80 kilometers (50 miles) east of the capital, Tripoli. The migrants were heading to European shores, it said.