ELLENSBURG, Wash. -

State wildlife officers are investigating after five elk were found shot and killed north of Ellensburg.

The Daily Record in Ellensburg reports that four elk calves and one cow were killed and their carcasses left to rot on Nov. 6 between Schnebly and Coleman canyons.

The Department of Fish and Wildlife says it's illegal to hunt elk calves. Hunting female elk requires a special permit.

Morgan Grant, a sergeant with the Washington Department of Fish and Wildlife, says his agency is asking the public for help. There are no suspects at this time.

The nonprofit group Conversation Northwest has offered a $3,000 reward for information leading to the arrests of those responsible. The Safari Club International has offered a $1,000 award.