Federal authorities in Oregon are investigating the deaths of three wild horses in a case eerily similar to shootings in 2011 that also claimed the lives of several wild horses.

Capt. Dan Smith of the U.S. Forest Service Law Enforcement and Investigations said that on Oct. 13, federal officers responded to a call about two injured horses discovered in the Ochoco National Forest near Pineville, Ore., in Crook County. Once on the scene, officers found a third injured horse, Smith said. The horses—two adults and one juvenile horse—had been shot, he said.

“It was a very difficult scene,” Smith said. “One horse was found mortally injured and officers had to put it down at the scene.”

The deaths were similar to the March 2011 deaths of three other wild horses, Smith said