The family narrated how the accused officer, identified simply as Kabiru, shot Idris on his lap while standing in front of his house.
The father, Musbau Bakare, said when he tried to rescue Idris and ask what transpired, the officer also pointed the gun at him.
Musbau said they kept asking the accused officer what happened but he and his three accomplices kept shooting indiscriminately.
The uncle of late Idris, Olumide Akigbola, also said Kabiru confirmed to have shot the gun and when asked why, said he could not explain the reason.
The family asked Nigerians to come to their aid so that the police would not sweep the case under the carpet.
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