In a shocking incident, a woman was killed and another seriously injured when some unidentified people threw them off a running train in Bihar's West Champaran district, police said on Friday."Two young women were forcibly thrown from a train near Bettiah railway station in West Champaran," a local police official said. The two were identified as Mamata Mishra and Shweta Verma, residents of neighbouring Uttar Pradesh, and were travelling on the Narkatiyaganj-Hajipur Intercity Express when the incident took place.Verma died on the spot while Mishra was battling for life at a government hospital, police said.A case has been lodged and investigation begun into the incident to identify and apprehend the assailants, police said.