Dartmoor Prison inmate put lives at risk by starting fire in his cell Serial arsonist Nar Rai, aged 29, piled paper on his bed to feed flames which sent thick smoke through the room The video will auto-play soon8Cancel Play now Get the best and latest crime stories with our Court Insider newsletterInvalid EmailSomething went wrong, please try again later. Sign me up! When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice. Thank you for subscribingWe have more newslettersShow meSee ourprivacy notice A prisoner put the lives of other inmates at risk by starting a fire in his cell at HMP Dartmoor.