A teenager who allegedly ran over another on his jetski has been helping in the search for his missing schoolmate.
Bishop Thompson, 17, is missing after falling off a jetski and being run down by another on Lake Okareka, near Rotorua, on Saturday.
The Herald understands Bishop was a passenger on the first jetski and fell off. He was run down by the second jetski, which had been following him. Bishop was not wearing a lifejacket and disappeared under the water.
Police dive squads have scoured the lakebed looking for Bishop's body but have not found him.
Detective Sergeant John Wilson said charges were "something we are going to have to consider ... but it is far too early for that at the moment".