The zoo said the other giraffes in the herd are behaving normally following Zuberi’s death, and they do not have access to the area where the incident occurred.

Zoo officials said they are “thoroughly reviewing the entirety of the areas used by the giraffes.”

“The Zoo Atlanta family, and especially those animal care team members who are with the giraffes daily, are deeply shocked and saddened by this tragic and unexpected loss. Zuberi showed no signs of injury, illness or distress in the moments prior to this event,” said Hayley Murphy, DVM, Vice President of Animal Divisions. “Our Animal Care and Veterinary Teams responded to the emergency right away, but despite their immediate and heroic efforts, were not able to save Zuberi.”

The official cause of death will not be known until a necropsy is completed.