KANSAS CITY, Mo. — A veteran zookeeper didn’t follow procedures for handling potentially dangerous animals in April when she was attacked at the Topeka Zoo by a tiger, zoo officials said Thursday.

A report detailing the zoo’s internal investigation says “multiple” zoo protocols that dictate what should happen before a person enters a space previously occupied by a tiger had prevented attacks at the zoo for decades.

“On the morning of April 20, a staff person omitted the crucial step of locking the tiger inside prior to the staff person entering the outdoor habitat,” according to the report.

Although he didn’t use her name, Zoo Director Brendan Wiley said in an email Thursday that the zookeeper who was injured, Kristyn Hayden-Ortega, was responsible for closing the gate.

Hayden-Ortega suffered wounds and cuts to her head, neck and back when a 7-year-old Sumatran tiger named Sanjiv pounced on her. She was hospitalized after the attack.

Zoo officials didn’t consider euthanizing Sanjiv, who they said reacted normally to someone being in his habitat.