The accused, identified as Nasir, a history-sheeter, and his two brothers last night shot dead Musahib while his son Taleem was injured in the firing, they said.
The incident took place when both the parties were returning from the city Kotwali after a meeting on the property dispute, police said.
Both of them were rushed to the district hospital, where Musahib was declared brought dead while Taleem was referred to trauma centre in Lucknow, police said.