Chittagong: A young condemned prisoner died a ‘mysterious’ death in Chittagong Central jail on Friday afternoon.

A day after his death, the jail authorities on Saturday said prisoner Abu Raihan, 25, who was sentenced to death by a court for killing a mother and her daughter in Agrabad’s CDA residential area, died all of a sudden.

The authorities, however, could not cite any reason behind his death.

Contacted, Chittagong Central Jail deputy jailer Jahedul Alam said they found Raihan dead in the jail. “We’re now taking steps as the jail code in this regard.”

Asked about the reason behind his death, he declined to make any comment about it.

According to the statement of the case in which Raihan, son of Chittagong district police Havildar Abul Bashar, and his accomplice Md Shahid were given the death penalty, the duo hacked to death Rezia Khatun, wife of C&F businessman Rezaul Karim, and her 16-year-old daughter Saima Naznin on March 24, 2014.

Police arrested the duo two days after the incident as Rezia’s husband Rezaul filed a murder case in this connection.

On October 1 last year, a court here sentenced them to death. Raihan had been in the Chittagong Central jail since he was awarded the death sentence.