The incident took place at Tikilipara chhak under the Jamankira police station of Sambalpur district. The mishap occurred at around 11 am when the school children were going to take admission at a school.
The deceased have been identified as Jeebardhan Patra (26), Jitendra Das (12), Jyoti Majhi (8), Mukesh Pradhan (13), Mamata Majhi (8) and Kundru Pradhan (23).
The injured persons have been admitted in the Veer Surendra Sai medical college hospital at Burla, where their condition is stated to be critical.
The local people and the police rushed to the spot and rescued those trapped inside the van. The injured were first rushed to Jamankira Community Health Center, from where they were shifted to Veer Surendra Sai medical college hospital at Burla for specialised medical attention.
"Some parents and their children were also in the van. They were going to Ardabahal for admission of their children," said police. The bodies have been sent for autopsy.