Some 117 migrants who left Libya in a rubber dinghy two days ago are unaccounted for, the International Organisation for Migration (IOM) said on Saturday, after three people were rescued from the vessel after it sank in the Mediterranean.

Around 117 migrants unaccounted for after dinghy sinks off Libyan coast

More than 33,000 migrants have died at sea trying to reach European shores since 2000, making the Mediterranean "by far the world's deadliest border", the United Nations migration agency said on Friday

Mediterranean 'by far world's deadliest border' for migrants: UN agency

By the time rescuers arrived, most migrants from the two ships had drowned. Only 27 had survived

239 migrants die in two shipwrecks off Libya: UN

The estimated death toll could put 2016 on track to be the deadliest year of the migration crisis