At least 18 migrants died in a shipwreck off the city of Tobruk in eastern Libya over the weekend, and 50 are still missing, the International Organization for Migration said on Tuesday, citing reports, Reuters reported.

Ten survivors have been accounted for so far, the IOM said.

Tobruk is a coastal city near the border with Egypt.

Since the toppling of Muammar Gaddafi in a NATO-backed uprising in 2011, Libya has become a transit country for migrants fleeing conflict and poverty to Europe across the desert and over the Mediterranean, according to Reuters.