The Delhi zoo on Thursday ordered an inquiry into the death of its last cape buffalo allegedly due to consumption of a plastic bag.
The male cape buffalo died on August 27.
The veterinary officer who conducted the postmortem found a plastic-like material in the stomach of the animal, an official said.
Riyaz Khan, the zoo's curator, said, "The administration has taken a serious note of the incident and an inquiry has been ordered into it. Strict action will be taken against anyone found guilty."