The Honolulu Zoo euthanized a wallaby that had been recovering at the zoo since its rescue from Halawa in February, the mayor’s office said today.

The wallaby was being treated for an “injury likely sustained during a fight with another animal,” the office said.

City officials said the wallaby arrived in poor condition and received treatment for various health issues during its stay at the zoo. Its latest health issue progressed too far and experts decided the marsupial’s recovery was unlikely.

“The zoo made the decision to euthanize in order to end the animal’s suffering,” the office said.

In July, zoo staff told the Honolulu Star-Advertiser that they were working with the wallaby, named Halawa, to help it acclimate to people.

“The wallaby’s health is improving, and the zoo is looking at options to possibly accommodate the wallaby in the zoo,” Honolulu Zoo Director Linda Santos said in July.

The wallaby, likely descended from an imported pair that escaped their owners more than 100 years ago, had been spotted a few times outside the perimeter of the Halawa Correctional Facility before it was caught Feb. 23, according to news reports at the time.