Twelve people, mostly children, have been killed and three others injured when a truck mowed them down in Goalpara district of Assam late last night.<br/> Superintendent of police Luis Aind said the accident occurred when the children in the age group of 10-14 years were wallking back to their homes at Dabli after attending a Bihu function at Lella and a truck driver lost control of his vehicle and hit the children, killing nine of them on the spot and critically injuring six others, on NH37 at 11pm. Residents blocked the NH37 immediately after the accident which continued till 5 am today. <br/>