Nine people, including two railways employees, have died and several injured after an express train collided with a goods train in Darjeeling district of West Bengal Monday morning. Kanchanjunga Express was travelling from Agartala in Tripura to Sealdah in Kolkata when a goods train hit it from behind near Rangapani station, close to New Jalpaiguri. While a probe is still underway, railways say they suspect human error. NDTV's Vedanta Agarwal reports from the collison site.