A video that appears to show three fishermen being shot dead in the sea has been posted to YouTube.
One News said information on the video suggested it was filmed outside Fiji waters, but it was yet to verify the authenticity of the video.
3 News reported it had tried to establish whether the video was authentic and that Fiji Police were investigating it.
The video appeared to have been filmed from the deck of a boat. Three men are shown holding on to an upturned boat in the water, before being shot and killed, the TV stations reported.
3 News reported that a Fiji government official insisted the video did not show local fishermen.