A district judge yesterday gave life sentence to five operatives of outlawed militant outfit Jama'atul Mujahideen Bangladesh (JMB) for the 2005 Bogra serial blasts.Bogra Additional District and Sessions Judge Nitai Chandra Saha also fined the Islamist militants Tk 20,000 each in default of which they will have to spend two more years behind bars.The convicts are Mamun, 28, Sirajul, 27, Abdur Razzak, 25, Golam Kibria, 25, and Waliullah, 22.ccording to the case history, the convicts exploded bombs at five different places, including the court premises and Bir Shreshtha Square, Bogra town during the countrywide serial blasts on August 17, 2005.JMB chief Shaikh Abdur Rahman and his second-in-command Bangla Bhai were dropped from the charge sheet of the case as they had been executed earlier in another serial blast case.