The convicts are - Rabeya Aktar, 35, wife of victim, her associates Saiful Islam, 24, Md Firoj, 28, Md Abul Kalam, 22, and Md Abul Asad, 20.
Khagrachhari District and Sessions Judges Court Judge Reza Md Alamgir Hasan announced the verdict. Four of the convicts were present in the dock.
Public Prosecutor Bidhan Kanungo said Rabeya and her accomplices slaughtered the victim over extramarital affair on February 5, 2016.
Police submitted charge sheet on September 5 that year in the case.
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