A priest was threatened with death in a letter sent by militant group Islamic State’s ‘Bangladesh branch’ in a Lalmonirhat church. Tapan Kumar Barman, priest of ‘Church of God’ mission in Lalmonirhat, filed a general diary at Sadar Police Station on Saturday night.Sub-Inspector Alamgir Hossain told that, Barman received the letter on Thursday night. The sender’s name on envelop read ‘IS Bangladesh Branch Commander’.