Kanhmun police said Milan Joy Reang (25) was the main accused in the murder of Rajdali village development chairman Vanlalzuala (34) and his wife Lalrammawii in broad daylight on July 2 last year.
Joy Reang and two others of Rajdali village under Kolasib district waylaid the couple who was on their way home carrying Rs 84,460 of NREGS fund for the village. They killed the couple and fled with the money.
Two of them, Bairea Reang and Burdia Reang, were nabbed within a few days from Asapara relief camp in North Tripura by the Bru Defence Committee, Young Bru Association and Mizoram Bru Displaced Association.
Police said Joy Reang had been hiding in Assam and had returned to Tripura a few days back. He was arrested with the help of Tripura police.