The UN refugee agency says not enough is being done to save the lives of the rising number of migrants trying to cross the Mediterranean to Europe.
A UNHCR spokesman called on the EU to step up its rescue system, after a migrant boat capsized off Libya on Sunday, with 400 feared dead.
Libya’s coastguard says it expects more attempted crossings later this week.
Hundreds of thousands of people have made the perilous crossing in recent years, fleeing poverty and conflict.