It's now thought 500 people may have drowned when a boat fill of asylum seekers sank near Malta.
Many migrants fleeing North Africa have been rescued off the Italian coast in the past few days.
But two Palestinian survivors say they were on a boat deliberately rammed by traffickers.
It's thought some survivors were picked up but most are feared to have drowned.
The International Organisation for Migration (IOM) says survivors claim traffickers capsized their boat and left them to drown. Up to 100 children are believed to have died.
The migrants left Egypt on September 6.
IOM says there were about 300 people crammed below deck and 200 on top.