Sargodha : At least eight schoolchildren suffered burn injuries when their van caught fire in Sargodha district of Punjab. The cause of fire could not be ascertained. Police and rescue officials said the incident took place in Bhalwal city of Sargodha district. Locals and rescue teams arrived on the scene and extinguished the fire . They shifted the injured children to the tehsil headquarters hospital Bhalwal. The children were aging between eight and twelve years. Two of them are said to be in critical condition. Police are investigating the incident.