The van was reportedly carrying four Japanese and a Thai guide, besides the driver. The van caught fire soon after it crashed into the rear of the truck.
Rescue workers who rushed to the scene put out the fire and helped out the injured passenger. The minivan belonged to RL Service Co, Ltd.
JS 100 Traffic Radio said the victims were four Japanese; Kumiko Komeima, 59, Yoshio Komeima, 68, Katsuhiko Narimoto, 65 and Haruka Narimoto, as well as a Thai guide, Piyathip Kruengtai, 35.