<p>At least 6 persons were killed and 40 people sustained injuries after a tourist bus they were travelling in overturned near Kalinga Ghat in Ganjam district of Odisha on May 24.</p>.<p>The mishap took place while the bus was returning from Daringbadi to West Bengal. </p>.<p>“Tourists from West Bengal were returning from Daringbadi. It must have happened due to brake failure or the driver is new to ghat road,” said Pradhan, Fire Officer.</p>