KIMBALL, Neb. (AP) — Conservation officers in western Nebraska are looking for those responsible for illegally killing several pronghorns and leaving their carcasses to rot.

Officials said the remains of four buck pronghorns — three without heads — were found Oct. 17 on private land south of Kimball. Officer Scott Brandt says that since then, three or four more pronghorn remains have been found in southwestern Nebraska.

In north-central Nebraska case, officers are looking for the person who killed a cow elk on Oct. 14 or Oct. 15 and left to rot near a road northeast of Valentine.

Rewards of up to $1,000 are being offered for information leading to conviction of people responsible for the animals’ deaths. Informants can contact the Nebraska Wildlife Crimestoppers program at 800-742-7627 and may remain anonymous.