A convict in the BDR mutiny case died in Kashimpur central Jail in the early hours of Saturday.
The deceased was identified as Sambhu Kumar Sharma 62, son of Harendra Nath Sharma of Gopgram Jotpara area of Kushtia's Khoksa Thana.
He was sentenced to 16-year imprisonment in a case filed over the mutiny.
Amirul Islam, senior jail superintendent of Kashimpur Central Jail-2 , said Sambhu fell sick around 3am in the jail and was taken to the prison hospital.
However, he was later sent to Shaheed Tajuddin Ahmed Medical College Hospital, where doctors declared him dead.
The body will be handed over to the family after post-mortem, Amirul Islam added.
Seventy-four people, including 57 army officials, were killed in the mutiny in the capital's Pilkhana headquarters of the erstwhile Bangladesh Rifles (BDR) on February 25 and 26 in 2009.
A total of 58 cases, including one for murder and looting and the rest for mutiny, were filed in connection with the incident.
Some 152 people were sentenced to death and 423 others to different jail terms in the case. Besides, 277 accused were acquitted.