The owner of a Quarter Horse mare found dead in its South Carolina pasture last month is offering a $2,500 reward for information leading to the arrest and conviction of whoever is responsible for the incident.

The horse was discovered dead in its pasture with a single small wound in its head on Aug. 28. A necropsy performed at the University of Georgia revealed that a captive bolt pistol or similar instrument was used to kill the animal, said owner Adam Burnsed.

“Whoever did it knew what he was doing,” Burnsed said. “There is no apparent motive for this, so the only way we will get a lead in the case is for someone to come forward