The condemned convicts are Kazi Sarwar Uddin, Shahidul Islam and Mir Hossain while the lifer is Hosne Mobarak Rubel.
Farhan Sakib, the boy who got killed
The court also fined them Tk 50,000 each, in default, to suffer one year more imprisonment.
The court also sentenced condemned convict Kazi Sarwar, who was tried in absentia, to another 10 years imprisonment for his crime.
Shahidul Islam & Hosne Mobarak Rubel (two of the convicts)
According to the prosecution, the convicts killed Farhan Sakib, 15, a class X student and son of Shahidul Islam of North Mobarakghona in Mirsarai upazila, by slitting his throat over previous enmity on June 6, 2015 after taking him to a forest in Nayatila hill of the area.
Police recovered the body and a case was filed.
Chattogram acting district and sessions Judge Munshi Mohammad Abdul Majid handed down the verdict.