The deceased was identified as Suram Singh (50), the police said, adding that the driver and four passengers were among the injured.
The accident took place near the Greater Kailash area, on the outskirts of Jammu, when Kavinder Gupta's convoy was returning from a function, a senior police official said.
The driver escaped with minor injuries and Suram Singh's body was retrieved from the vehicle, the official added.
"I will visit the deceased's family to personally express my condolences," the deputy chief minister added.
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