The main gas supply line to Narsingdi was damaged during construction work on a drain, according to Titas Gas authorities
It has sentenced the remaining suspect to life in prison.
A High Court bench of Justice Krishna Debnath and Justice Muhammad Mahbub-Ul-Islam passed the order on Sunday after hearing the suspect’s appeals, jail appeals and death references.
The acquitted are Saddam, Zakir Hossain, Miran and Shetu.
The court jailed Fazle Rabbi Shishir for life.
Lawyers SM Shahjahan and Badruddoza Badal appeared on behalf of the suspects while Deputy Attorney General Md Bashir Ullah represented the state.
Deputy Attorney General Md Bashir Ullah told bdnews24.com that the prosecutors will appeal against the verdict.
Tenth grader Shah Jamal Swadhin was murdered in Shokal Bazar area of Jamalpur Sadar on the night of Mar 23, 2010.