The PKR de facto head was taken from Sungai Buloh Prison, where he is currently serving a five-year jail sentence for sodomy, and brought to the finance ministry headquarters in Putrajaya, reported news portal Malaysiakini.
Anwar was deputy prime minister and finance minister when Bank Negara Malaysia allegedly suffered the losses in the early 1990s.
His family was notified of the hearing only today and also not given the clearance to see him.
“Even lawyer R Sivarasa was not allowed to represent my father during the said hearing,” his daughter Nurul Izzah Anwar, who is PKR’s Lembah Pantai MP, was quoted as saying by Malaysiakini.
Anwar had previously said he would co-operate with the task force if required.
The task force was formed in February after former Bank Negara assistant governor Abdul Murad Khalid claimed in an interview that the central bank racked up US$10 billion in foreign exchange losses during the early 1990s when Dr Mahathir Mohamad was prime minister.
Mahathir is now chairman of new opposition outfit Parti Pribumi Bersatu Malaysia (PPBM).
The task force is headed by the former chief secretary to the government Mohd Sidek Hassan.
The others in the task force include senior officials from the Malaysian Anti-Corruption Commission, the finance ministry, the Securities Commission, the police’s Commercial Crimes Department and others.