Four people were injured when a bus and several cars collided at Rangiriri north of Huntly this afternoon.
Northern fire communications spokesman Scott Osmond said a bus had collided with three cars.
"I believe there were three vehicles, one person is trapped in a serious but not life-threatening condition.''
Three other people were also injured but none of their conditions was life-threatening, he said.
He was unable to confirm what kind of bus was involved.