An Associated Press photographer at the scene of the latest migrant disaster says authorities are collecting the bodies of migrants who drowned off the Libyan coastal city of Zuwara.
Authorities were loading bodies in orange bags onto the back of a pickup truck. Workers were seen removing bodies that were floating in the water.
Two boats carrying up to 500 migrants are thought to have capsized, one with 50 on board the second had 400, according to BBC News.
It was not clear how many migrants had drowned.
Dozens of boats are launched from Libya each week, with Italy and Greece bearing the brunt of the surge.
Record numbers of migrants fleeing violence and poverty in countries such as Syria, Afghanistan and Eritrea are trying to reach Europe this year, despite the risks of perilous sea crossings and little humanitarian assistance.
Separately, in Austria up to 70 migrants were found dead in an abandoned truck on a motorway close to the Hungarian border.