Amnesty International is investigating a graphic video posted on the internet, which show men being beaten and tortured in Fiji.
The nine-minute video shows one man handcuffed in the back of a ute being beaten with rods, while another man is on the ground being tugged at by a dog.
The beatings are administered by men in plain clothes speaking Bauan - a Fijian dialect. It is thought the footage is from an incident last year where five prison escapers were apparently assaulted by the military when they were eventually recaptured.
Amnesty International executive director Grant Bayldon said a team in London was trying to verify the video.