The vehicle, carrying a marriage party, was coming from Birpara after the marriage ceremony and collided with the truck coming from the opposite direction this morning, Superintendent of Police Akash Meghariya said.
While 12 people, including the bride and groom, died on the spot, six were seriously injured. The deceased also included the driver and his assistant of the vehicle.
Of the six injured, three persons died in the North Bengal Medical College and Hospital at Siliguri. Condition of others was critical, he said.