Rebel spokesman Ahmed Hassan said that Gaddafi's forces were directly targeting the port of Misrata with Russian missiles, where a ship carrying humanitarian aid was due to arrive.
Rebels are trying to take control of Misrata airport from Gaddafi's army, Reuters reports.
NATO also continued bombing Libyan army positions in Zintan, a town southwest of Tripoli, most of which is under rebel control.
Clashes between Gaddafi's army and rebels continued near the border town of Dehiba, and several projectiles fell on Tunisian territory, reports Agence France-Presse.
UN evacuates foreign staff from Tripoli
The United Nations evacuated foreign staff from Tripoli on Monday due to unrest in the Libyan capital, the UN said. Stephanie Bunker, a spokeswoman for the UN Office for the Coordination of Humanitarian Affairs, said 12 staff had left Libya and were currently in neighboring Tunisia. She added that representatives from various UN agencies had arrived in Tripoli in April after Libyan authorities allowed UN agencies to enter the capital. Foreign UN staff remain in the rebel stronghold of Benghazi, in eastern Libya.
The UN mission and embassies of some countries were targeted by angry crowds overnight after a NATO airstrike on Tripoli that killed the youngest son of Libyan leader Muammar Gaddafi, the BBC reported. Three of Gaddafi's grandchildren were also killed in the same attack, but Gaddafi, who was in the same building complex at the time of the attack, was not injured. International coalition forces began bombing targets in Libya on March 19 to enforce a no-fly zone over the country and prevent the regime's repression of civilians. NATO took command of the operation, led by France, Britain and the United States, a week later. The day before the attack on the Tripoli neighborhood where the Libyan leader is based, Gaddafi offered the Alliance a ceasefire and negotiations to end the crisis in Libya. NATO rejected the proposal.
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