A New Zealander, Ballu Khan, who is accused of being part of a conspiracy to kill Fiji leaders, has been released from hospital into police custody to be interviewed.
Mr Khan was among 16 people arrested early this month when the military and police said they foiled a plot to assassinate the interim prime minister, Commodore Frank Bainimarama.
Medical records show Mr Khan suffered a fracture at the base of his skull and a fracture of his left cheekbone, as well as psychological effects.
Police say the injuries were the result of him resisting arrest.
11 other suspects have been in Naboro prison on remand to reappear in court next week.
The New Zealand Prime Minister Helen Clark says she's concerned for the health of Mr Khan.
Miss Clark says given these reports, she's worried about the legitimacy of his detainment.
She says the New Zealand High Commission will continue to try to see Mr Khan.