The Hyderabad police nabbed four foreign nationals - two Nigerians, a Tanzanian and a Sudanian and deporting them to their country to prevent them from indulging in undesirable activities detrimental to national security. The quartet has been identified as Maxwell Anthony Izuchukwu (29) and Chinaza Nnanna Vivian alias Ibrahim Niasha (38), both natives of Nigeria, Mwajuma Almasi Masisila (30) of Tanzania and Ahmed Hamid Abujabr Hamid (27) of Sudan.