Ujjain(MP): Four children died and 11 sustained grievous injuries when their school van was rammed by a speeding truck on Monday near Hatai Palki village 10 km from Unhel in this district’s Nagda Police Station limits, law-enforcement authorities said. The lorry had started from here. The deceased were identified as Unhel residents Inaya (6), Bhavesh (13), Uma (15), and Sumit who were heading for an academic institution in Nagda. Those hurt were rushed to Nagda and then some critical cases were referred here. The Collector and the Superintendent of Police rushed to an infirmary.