Four persons were arrested on Sunday for the killing of the son of the headman of Karagaon village in Assam’s Karbi Anglong district, police said. The four persons, including the prime suspect, were picked up from Rotomi village of Zunheboto district in Nagaland in connection with the killing of D.C. Rongpi on Saturday. The four have been identified as Zhutovi Seme, Yeheka Chobhy, Yehakato Chobhy and prime suspect Zakato Choby. — PTI