MITCHELL, Neb. (AP) — A grass fire northeast of Mitchell has scorched about 3,000 acres.

Mitchell Fire Chief Jon Wurdeman told local media that about 55 people from nine fire departments worked to contain Thursday afternoon’s blaze. The fire burned 3,000 acres but was contained to one property.

Wurdeman says the official cause of the fire hasn’t yet been determined but it may have been sparked by heat from catalytic convertors on vehicles used by a fencing crew.

No injuries have been reported.