Surender Singh (30) suffered major burn injuries in the blast at Zaveri Bazaar and died this morning, hospital sources said.
Also, 22 other people are undergoing treatment in J J Hospital of which eight are still in critical condition, the sources said.
Last night, Shripal Mujhapura (35), who suffered severe head injuries in the blast at Opera House, died at Harkisandas Hospital.
Of the 12 injured persons admitted to Harkisandas Hospital, five are still in critical condition, hospital sources said. A total of 129 persons were injured in the blasts while 22 have lost their lives till now.