OKLAHOMA CITY, OK (WCMH) — A family in Oklahoma woke up to one of their beloved horses stabbed to death.

“We had our gate closed and everything. They had to have climbed over the fence,” Joan Manning told KFOR.

The horse, Tina, a spotted Apaloosa mare, had been attacked during the night and left to die.

A necropsy on the horse was performed and a veterinarian determined that Tina had been stabbed with a sword or a long knife.

“There’s blood spatter on the fence, so they’re kind of wondering if this is where they had her first, where they tied her up maybe,” Manning said, pointing to a spot near a fence.

Manning told KFOR she doesn’t know who would have killed the horse, but are worried they may come back. “There’s something really sick with people that want to do this kind of thing.”