Armed groups in Tripoli have signed a ceasefire deal ending a four-day battle for control of the Libyan capital. The unity government said today the city has been paralysed amid exchanges of rocket and artillery fire between pro-unity government forces and rival militias including groups allied with former Prime Minister Khalifa Ghweil. <br/><br/>Today's deal cements the UN-backed Government of National Accord's control over large parts of the capital. It provides for an immediate ceasefire and calls for armed groups that do not recognise the GNA to leave Tripoli within 30 days. It also demands the release of people arrested since Monday.<br/><br/>Clashes last night rocked the capital's southern Salaheddine district, where several rival militias occupy barracks. But the city and its surroundings were quiet today following the overnight deal, signed by the GNA, local Mayors and powerful militias from Tripoli and Misrata.