SCOTTSBLUFF, Neb. (AP) — A young zebra has died at a western Nebraska zoo because of an accident during castration.

Riverside Discovery Center in Scottsbluff says a catastrophic accident happened.

The zebra, named Olaf, was born earlier this year. He was getting ready to undergo the routine procedure of castration when the accident happened.

Zoo officials didn’t provide details of the accident. Zoo Executive Director Anne James says the staff is overwhelmed with grief because of the animal’s death.

The zebra’s parents still live at the zoo.