Reports has it that deaths and displacements seized Libya on Monday as eastern forces sought to push into the capital Tripoli.
The fighting threatens to disrupt oil supplies and wreck UN plans for an election to end rivalries between parallel administrations in east and west.
The eastern Libyan National Army forces of Khalifa Haftar said 19 of its soldiers had died in recent days as they closed in on the internationally recognized government in Tripoli.
A spokesman for the Tripoli-based Health Ministry said on Monday fighting in the south of the capital had killed at least 25 people, including fighters and civilians, and wounded 80, Reuters reported.
The United Nations said 2,800 people had been displaced by clashes and many more could flee, though some were trapped.