A youth of Bonei sub division was arrested on Thursday evening allegedly for killing his father and mother and throwing them in a river about four days ago.
Two of his associates were also arrested by Koira police allegedly for their involvement in the murder. The body of the deceased father was recovered, while that of the mother was being searched.
The police had detained Sonu Munda and his associates Jakira Munda(22) and Santanu Munda(18) allegedly for killing Ratha Munda and Srimati Munda. According to sources, Sonu Munda had killed Ratha and Srimati, his parents, over a family dispute on Sunday night.