Two cases were filed with Kolabagan Police Station over double murder in the capital’s Kolabagan on Monday night.In this incident a suspected student has been detained on Monday night.The detainee is Anwar Hosen Linkon, a student of Central Ideal College. He is the inhabitant of Kolabagan area.An elder brother of dead one Minhaj Mannan Emon filed a case mentioning unidentified 5 to 6 name of people. Police also filed another case in the incident of attack on Assistant Sub Inspector Momtaj by the killers when they fled away from the scene after killing two people.Officer-in-charge of Kolabagan Police Station Iqbal Hosen confirmed the matter.It is mentionable that, miscreants on Monday evening chopped Xulhaz Mannan, a Political Process Analyst at the USAID and his friend Mahbub Tonoy, 26, a private university student, to death at Kolabagan area.