The collision took place in Chakalvanshi area of the district, said Ravi Kumar NG, the District Magistrate of Unnao.
"One of the deceased has been identified as Soni (40), while the other two deceased were women, whose identity could not ascertained," the district magistrate said.
The injured were rushed to Unnao district hospital and 11 critically injured people were referred to a hospital in Kanpur for treatment, he said.
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