UN Secretary-General Ban Ki-moon Tuesday said he was "deeply concerned" over the recent escalating violence in Libya, calling on all parties to "end these attacks and prevent further escalation."The violence included the air strikes in Tripoli and the Nafousa Mountains in the west, as well as in Benghazi and its environs in the east, said a statement issued here by Ban's spokesman. Ban reminded all parties of their moral and legal obligations to protect civilians and abide by international human rights and humanitarian law, Xinhua reported."The secretary-general is also deeply concerned by the violation of the United Nations premises in Tripoli that took place Nov24," the statement said. "Such actions and incitement cannot be tolerated and must cease immediately."