Latif Mian (50) succumbed to his injuries last night at the PMCH in the state capital where he was referred to after an inmate had attacked him with a piece of brick the previous day, District Magistrate Virendra Kumar Yadav said.
Yadav said that he had ordered a probe by the Sadar SDO and SDPO and the two officials were likely to submit their report to him by this evening.
Mian, serving life imprisonment in a murder case since 2002, was brought to the Bhagalpur central jail from Banka jail in 2008, a prison official said.