After the wrecks of two separate ships that were traveling from Libya and Morocco, roughly  170 migrants  are feared dead at sea, according to the U.N.

So far, four people have been rescued from the water.

The U.N.

Has been  unable to verify  the death toll as of Sunday.

In a tweet, the U.N.

High Commissioner for Refugees said, "If the only measure of success in addressing refugee and migration movements is to reduce arrivals in Europe ... people will continue to drown." According to the U.N., 2,262 migrants died last year while attempting to cross the Mediterranean Sea on their way to Europe.