TOPEKA, Kan. (AP) — Authorities on the Kickapoo Reservation in northeast Kansas are asking for the public’s help in figuring out who’s been setting fire to hay bales.

The Topeka Capital-Journal reports that five hays bales valued at about $400 each have been intentionally set on fire on the Kickapoo Reservation recently. The fifth hay bale fire was set Wednesday night.

Kickapoo Tribal Police Chief Michael Dougherty says the tribe is offering a $1,000 reward for information leading to an arrest.

The tribal police have also sought help from the Bureau of Indian Affairs.