The Fiji military has confirmed taking in a prominent lawyer, Kitione Vuetaki, for questioning.
Fiji online media report he was taken from his office in Lautoka.
A senior officer denied that Mr Vuetaki was taken in by soldiers while the military spokesman has confirmed the incident.
Mr Vuetaki's wife says the officers denied detaining her husband and referred her to the police.
Mrs Vuetaki said she was unsuccessful at the police station.
Mr Vuetaki has been acting for the Great Council of Chiefs which the military regime has suspended.
The GCC refused to endorse the vice-presidential nominee following its earlier refusal to approve the military commander's view that he was the acting president after the coup.