UN Secretary General Ban Ki-moon arrived in Chad Friday, the second stop in his three-nation campaign to try to end the ethnic conflict in Sudan's Darfur region, a spokesperson said according to DPA. Ban held talks with Chadian President Idriss Deby in the capital N'Djamena before flying on to Tripoli for a meeting with Libyan leader Moammar Gadafy, who has accepted to host intensive talks to end the fighting in Darfur. Ban will spend the weekend in Tripoli before returning to New York. Before leaving Khartoum for N'Djamena, Ban called for an immediate ceasefire in Darfur and urged the warring parties to achieve a political solution to end the ethnic conflict. Peace talks involving the Sudanese government have been brokered starting October 27 in Tripoli under the mediation of the UN and the African Union (AU), Ban announced Thursday.