The visit lasted a few hours, according to Deputy Foreign Minister Khalid Kaim, who said the Libyan officials requested U.N. observers on the ground and gave al-Khatib letters to share with the U.N. Security Council that describe "provocations" by NATO.  Meanwhile, Libyan state television reported that a fresh NATO airstrike hit the western city of Zuwara, near the Tunisian border. Tunisia's state news agency TAP also reported an airstrike on government troops and radar installations near the border, where thousands of refugees have been pouring out of Libya amid the conflict.  There was no immediate confirmation of the attacks from NATO. Allied warplanes have been bombing Libya since March 31 under a U.N. resolution that authorized "all necessary measures" to protect civilians during the uprising against Gadhafi that began in February.  Opposition fighters are demanding freedom and an end to Gadhafi's nearly 42-year rule. Rebel forces now control most of eastern Libya and have set up a provisional government headquartered in Benghazi.  Gadhafi is among three Libyans facing arrest warrants from the International Criminal Court for alleged crimes against humanity, an official with direct knowledge of the case told CNN Saturday. The court's chief prosecutor, Luis Moreno-Ocampo, is expected to announce Monday that he's seeking the warrants.  Kaim dismissed the possible ICC action, saying that because Libya is not a signatory of the Rome Statute -- which established the ICC -- the government will "just ignore it."  Moreno-Ocampo said in early March that he planned to investigate Gadhafi, the first time the court has launched a probe into allegations of crimes against humanity, as a conflict unfolded. The allegations include the killings of unarmed protesters by security forces and the use of displacement, illegal detentions and airstrikes against civilians.
A U.N. envoy held talks in Libya on Sunday, as NATO warplanes kept up their bombardment of forces loyal to longtime strongman Moammar Gadhafi, Libyan government officials said.The special envoy,