JACKSON, Miss. (WJTV) –Six Jackson Zoo animals were killed overnight by feral dogs, zoo officials said. Two others were injured.

Zoo staff members said they discovered that the animals had been attacked early Friday morning. Staff members said one Addra Gazelle and five Springbok were killed. Two spur-winged geese were injured. The geese were taken to the Zoo’s Animal Hospital for care.

Animal Control was called so that the feral dogs could be caught and not other animals.

The Zoo captured four of the five feral dogs believed to be involved in the accident. One dog escaped; along with another dog that was spotted in the cemetery next to the zoo. They said they don’t think the dog in the cemetery was a part of the attack.

“This is a sad day, and the hardest thing about it is it didn’t have to happen. The entire zoo’s animal care staff work very hard to give the best care to the collection of animals here at the zoo, and to have them killed this way is tragic,” Zoo Director Beth Poff said, “There are people out there who have not taken responsibility for their dogs, and, unfortunately, we all have to suffer the consequences.”

The staff is trying to determine how the dogs got inside. They said they contact the City of Jackson for assistance in containment.