The victims were returning to Dignapur after a picnic at Bethuadahari Forest in the district. The accident happened barely a kilometre from the picnic spot, they said.
The driver of the van tried to overtake a truck at high speed and in the process collided with another truck coming from the opposite direction, police said.
The van, in which there were 17 passengers, overturned after the collision.
Local residents rushed to the spot after the accident and took the injured to Bethuadahari Primary Hospital, where eight persons were declared dead. Five of the seven injured were later shifted to Shaktinagar hospital in Krishnagar, the police said.
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