Up to 50 missing after boat sinks

The Mediterranean Sea has become the world’s most deadly border zone for migrants. More than 2,000 migrants and refugees have died so far this year in bids to reach Europe by boat — compared with 3,279 deaths during the whole of last year, said the International Organisation for Migration.
An Italian navy helicopter on Tuesday spotted a rubber boat that appeared to be deflating, the navy said, and dropped life rafts to the migrants on board. The boat then sank, it said.