By Ike Uchechukwu, Vanguard Newspaper No fewer than 2,560 Nigerian international passports have been abandoned at the Nigeria Immigration Service (NIS), Calabar office. The Comptroller Immigration Service (CIS), Christopher Baikie made this known while speaking with some journalists in his office on Tuesday. Confirming the situation, the passport control officer, Mrs. Clementina Ogbundu said the