MELBOURNE, Australia (AP) — A woman has sustained severe injuries to an arm when she was attacked by a lion at an Australian zoo. The Darling Downs Zoo in Queensland state said the 50-year-old woman was watching animal keepers working in the zoo’s carnivore precinct before opening hours Sunday morning when she was attacked.

A Queensland woman sustained serious injuries to her arm on Sunday when she was mauled by a lioness at the Darling Downs Zoo in Pilton, Australia. Zoo officials said via Facebook that the lioness “inexplicably” grabbed the woman’s arm while she was watching zookeepers tend to the enclosure before opening.