A 34-year-old man who was working on a digger alone in a Waitati forestry block was found on the ground by a friend after the man failed to respond to a radio call.
Emergency services were called to Clark Rd, Waitati, about 11.30am and police later confirmed the incident involved a digger.
Police confirmed this morning, the man was working by himself using the digger to clear a boundary line.
A friend went looking for him after he failed to respond on the radio and subsequently found the man on the ground, police said.
CPR was attempted at the scene.