District and Sessions Judge Bhupendra Kumar Nigam convicted Sunil Paimaal and his two sons Shubham (20) and Ankit (24) for the murder of 19-year-old Aman on August 20, 2014.
Prosecution counsel Vimal Mishra said Aman and the convicts had a dispute six months prior to the murder.
"Aman had lodged a complaint with the police over the dispute, after which he was killed by the trio," Mishra said.
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