Five persons were today killed and 50 others injured when several bogies of the Howrah-Dehradun Doon Express derailed near Mahrawa Station near Jaunpur, Uttar Pradesh.Superintendent of Police, Jaunpur, Akash Kulhari said, the incident took place this afternoon, told PTI.Relief and rescue teams have been rushed to the spotfrom Varanasi and Lucknow.