ISLAMABAD   -    Two men died in   area of Khanna after the room   was filled with the gas emitting from the burning coal, informed a police spokesman on Monday. The bodies of the two men were moved to hospital for autopsy where they were identified as Mehmood and Abdul Razzaq, he said. According to Police, the two men fell asleep after burning a coal fire hearth to warm the room   in Khanna area, but the gas   released into the air turned out to be life-taking. Meanwhile, Bhara Kahu police   arrested two main culprits involved in murder of four persons in Siri Chowk. The detained suspects were identified as Razi Ur Rehman and Sajid Ur Rehman, said   police spokesman, adding that police had already four suspects in custody in this high profile case.