The UN Security Council on Friday unanimously adopted a resolution endorsing the progress that Libya's warring sides have made towards peace since signing a ceasefire in October, diplomats said.
The opposing sides in Libya had asked for a UN resolution documenting their progress on political and security issues once they came to the ceasefire agreement last fall.
Libya has been ravaged by bloodshed since the fall and killing of leader Muammar Gadhafi in a NATO-backed 2011 revolt.
An array of armed groups arose to fill the vacuum, and many coalesced around the Tripoli-based Government of National Accord or Libyan National Army commander Khalifa Haftar, who backed an eastern administration.
The two camps, each supported by foreign powers, fought for more than a year before Haftar was forced to retreat.
In October they signed a truce, setting in motion a UN-led process that saw a new transitional government installed in February.
The resolution that was passed in New York Friday calls for the creation of a ceasefire surveillance unit of up to 60 members within the UN mission in Libya, called UNSMIL.
This is separate from a ceasefire monitoring mechanism that the warring parties themselves are working to create.
The UN unit will help the local one oversee the ceasefire. But the resolution says nothing about who will oversee the departure of the 20,000 foreign fighters and mercenaries who have joined the fray in Libya.