A three-member high-level advisory committee has been formed to investigate how former President Md. Abdul Hamid left the country through the airport and whether there was any negligence involved. The committee is headed by Education Adviser Prof. C. R. Abrar, with Environment Adviser Syeda Rizwana Hasan and Labour Adviser Brig. Gen. (Retd.) M. Sakhawat Hossain as members. Former President Hamid departed for Thailand on Wednesday night via a Thai Airways flight.