Islamic sharia law will prevail in liberated Libya and any existing laws that contradict it will be abolished, National Transitional Council leader Mustafa Abdel Jalil said on Monday. As an Islamic country, we have adopted sharia as the principal law, Abdel Jalil said at a ceremony in the eastern city of Benghazi. Libyas transitional government on Sunday declared national liberation. Jalil cited as an example the law on marriage. Under deposed leader Moammer Gaddafi, who was killed on Thursday in unclear circumstances, polygamy was banned. As an example is the law on divorce and marriage ... This law is contrary to sharia and it has been scrapped," Jalil said.