CBI arrested four people, including two administrative officers of Indian Navy in Mumbai on Sunday, in connection with a question paper leak. Question papers for lower division clerk exam in the Indian Navy were leaked on Saturday. They charged 15,000 to 50,000 rupees from138 candidates for leaking the paper. 35,000 candidates appeared for the exam, which was conducted at various places yesterday. According to CBI (West Zone) Joint Director Rishi Raj Singh, the arrested persons were identified as R C Naik, D S Murthy who are administrative officers in Western and Eastern Naval Commands.