A migrant worker, whowas lodged at a quarantine centre in Odisha's Mayurbhanj district following his return from neighbouring Andhra Pradesh, allegedly committed suicide on Friday outside the facility, police said.Surendra Behera (38), a resident of Raikama village in the district, was found hanging from a tree near the isolation centre in Baisinga police station area, Inspector In-Charge (IIC) Laxmidhar Swain said.Prima facie, it appears to be a case of suicide, Swain said.Behera, it seems, used a lungi to hang himself, the inspector in-charge said.The 38-year-old had returned from Vijayawada in Andhra Pradesh along with wife six days ago. Both of them were placed under quarantine, Swain said.A case of unnatural death has been registered in this connection, the IIC said, adding that the body has been sent for post-mortem to PRM Medical College and Hospital in Baripada.