The U.N. Security Council expressed its concern about the deteriorating situation in Libya and its impact on regional peace and stability.
In a statement Wednesday, the 15-member Council said there is no military solution to the crisis and condemned the escalation of violence.
It also voiced full support for Bernardino Leon, the special U.N. representative in Libya, and urged all parties to engage constructively with his efforts to resume an inclusive political process in the country.
The U.N. body also condemned the ongoing human rights violations in Libya, the use of violence against civilians, and public intimidation - including of U.N. personnel.
Libya has been in chaos since longtime dictator Moammar Gadhafi was overthrown in 2011.
Libya's army has been fighting an array of Islamist, tribal and regional groups in recent months.
Libya's government and parliament took refuge in remote areas in eastern Libya when Islamist-backed militias seized the capital, Tripoli, in August.
The government has struggled to establish its authority across the country, while militants have a large part of it under their control.