Half a million children are in "immediate danger" in Libya's capital Tripoli due to fighting, the United Nations children's fund Unicef said on Monday.Clashes that broke out between rival militias in late August had killed at least 115 people and wounded nearly 400 by Saturday night, according to Libya's health ministry.The Unicef said on Monday that "over 1 200 families have been displaced in the past 48 hours alone as clashes intensified in southern Tripoli".That brings the total number of people displaced by the recent fighting to over 25 000, half of whom are children, the Unicef said. "More children are reportedly being recruited to fight, putting them in immediate danger. At least one child was killed as a result," said Geert Cappelaere, the UN agency's Middle East and North Africa director.The Unicef also said schools are increasingly being used to shelter displaced families, which is likely to delay the start of the academic year beyond October 3.* Sign up to News24's top Africa news in your inbox: SUBSCRIBE TO THE HELLO AFRICA NEWSLETTERFOLLOW News24 Africa on Twitter and FacebookIt said residents are facing food, power and water shortages, adding that the clashes have exacerbated the plight of migrants."Hundreds of detained refugees and migrants, including children, were forced to move because of violence. Others are stranded in centres in dire conditions", Cappelaere said.Despite a UN-brokered ceasefire on September 4, fighting broke out again last week in southern districts of the capital.The clashes have pitted armed groups from Tarhuna and Misrata against Tripoli militias nominally controlled by Libya's UN-backed unity government.The Libyan capital has been at the centre of a battle for influence between armed groups since dictator Moamer Kadhafi was ousted in a NATO-backed 2011 uprising.The country's unity government has struggled to exert its control in the face of a multitude of militias and a rival administration based in eastern Libya.