Kanpur (Uttar Pradesh): Six persons were killed and about 20 seriously injured when a coal-laden truck overturned in the Bhognipur area on Tuesday morning. The deceased include children as well. The truck was carrying labourers who were on their way to Firozabad. The labourers were seated on top of the coal-laden truck. All of them belong to the Hamirpur district. As the truck approached Maukhas village, the driver apparently lost control and the vehicle overturned. Six people died on the spot. All the injured have been admitted to the hospital where the condition of eight of them is said to be critical. The bodies were later sent for post-mortem.