Clashes between a renegade eastern commander's forces and pro-government militias escalated, increasing the death toll and forcing thousands of residents of the Libyan capital to flee their homes while trapping thousands more.
General Khalifa Hifter's forces have continued to push toward Tripoli, even as the United States, the United Nations and Arab nations have urged him to halt his offensive.
The European Union joined the chorus of voices as its head of foreign policy, Federica Mogherini, called for a "full implementation of the humanitarian truce" and "a return to the political track."
But that scenario appears increasingly distant. The United Nations' top humanitarian official in Libya said that more than 2800 people had fled the violence in and around Tripoli while wounded and vulnerable civilians are so isolated that emergency responders cannot reach them.
Hundreds, if not thousands, of migrants and refugees also are trapped in detention centers in active conflict zones, their misery compounding every day, according to the UN officials.