A native of Assam who had arrived here in search of work died under suspicious circumstances at Cheravamuttom, near Ithithanam, a few kilometres from Changanassery town. The police have registered a case of unnatural death and are awaiting post-mortem report. The Chingavanom police identified the deceased as Kailas Jyothy Behra, 30, who had arrived at Poovanthuruth in search of work. He arrived in the company of two others but had been missing ever since they arrived three days ago,. On Wednesday, the police got a call from local people that a migrant labourer who acted strangely had been overpowered and tied to a tree. By the time the police arrived at the spot, the person was in a serious condition. He was taken to a hospital where he died.