The accident took place when driver of the mini-van, carrying 20 children of a primary school, lost control over the wheels on the outskirts of Surayya Palli village under Manthani police stations limits, about 70 kms from here, at around 9.30 AM today, police sub-inspector Shaik Mastan said.
Out of the seven injured children, aged between 8 and 12, six were shifted to government hospital in Manthani and discharged after first aid, he said.
However, one child has been shifted to the government headquarters hospital in Karimnagar, where his condition is reported to be stable, the SI said.
A case has been registered, he said adding that a probe is on into the mishap.