Plumes of black smoke were seen rising from Central Hawke's Bay yesterday afternoon after a tractor had a mechanical fault and set a hay paddock alight.
Otane Volunteer Fire Brigade chief fire officer John Oliver said the smoke caused firefighters and members of the public to initially think it was a house fire.
"We had a lot of people scream and yell because they thought it was a house. When we came down the road it looked like a house fire because of all the black stuff coming off the tractor. It was good it wasn't a house."
Firefighting services were called to the hay paddock along State Highway 2, near College Rd, at 1.30pm and were still at the scene dampening hotspots just before 4pm.
Mr Oliver said the fire ate into an area measuring 150m by 150m and was thought to be caused by a mechanical fault with the tractor working in the paddock.