BHOJPUR: An unidentified group has attempted to set the examination section of the Biratnagar-based Mahendra Morang Campus on fire, on Thursday evening. They had discharged a petrol bomb at the room of the Campus located in Biratnagar Sub-Metropolitan City-16 at around 8 pm yesterday, according to police. However, the room, where the exam question papers were kept, did not get damaged, said police. A police team including a Police Inspector deployed from the Ward Police Office took the fire under control.