At least six children have been killed and 23 others injured in a bus crash in Chattanooga in the US state of Tennessee.<br /><br /> On board were 35 youngsters aged between 5 and 10 as well as the driver. They were on their way home from Woodmore elementary school.<br /><br /> The bus is said to have rolled before hitting a tree.<br />It’s not known what caused the accident <br />but police have said speed may have been a factor.<br /><br /> Chattanooga Fire Department said the last patient as extricated from the Chattanooga school bus: https://t.co/NLhagpuiuv… #WATE— Laura Halm (@WATELauraHalm) November 21, 2016<br />
