CAIRO (AFP) - Around 50 demonstrators loyal to Libyan leader Moamer Gaddafi surrounded UN chief Ban Ki-moon on Cairo's Tahrir Square Monday forcing him to retreat into the adjacent Arab League headquarters, an AFP correspondent reported. Shortly afterwards, Ban's motorcade was caught up in a second protest on the square, this time by hundreds of Egyptians demonstrating outside the former foreign ministry for jobs, housing and a better life. There were ugly scenes as police and troops forced back the crowd to enable the convoy to pass and take a detour through adjacent side streets to get the UN chief to a meeting with Prime Minister Essam Sharaf, the AFP correspondent said. Chanting "Down, Down USA, Libya, Libya," and carrying the national flag of Gaddafi's Libya the protesters outside the Arab League HQ surged towards Ban and his 15-strong delegation that included a UN deputy secretary general and former Chilean president Michelle Bachelet, the head of UN Women. The UN chief had been following in the footsteps of a string of international visitors to Cairo, including US Secretary of State Hillary Clinton, in touring the square which was the focus of mass protests that forced veteran president Hosni Mubarak from power last month.