Three workers of the Nehru Zoological Park were injured by a chimpanzee called "Suzi", which had set herself free from its enclosure for a few minutes on Wednesday.
According to the officials, the female chimpanzee opened the latch and the nut-bolt system using her long fingers from inside her night-house, opened the door, and walked out of the night-house.
The keeper, who was trying to open the door to let the animal out into the moat, immediately noticed the chimpanzee walking out, and followed it.
The chimpanzee moved towards the food court area, where two workers were cleaning; one worker was busy sweeping the lawns nearby.
The chimpanzee injured the two food court workers, one on the calf, and another on the ankle. The worker in the lawns was injured on the palm.
After this, the chimpanzee moved to the lawn, which is barricaded from all the sides, and sat quietly on the corner.
The veterinary staff of the zoo arrived at the spot, and with the help of the keeper, gave her mild sedation. Once sedated, the chimpanzee was shifted back to the night-house, where it is said to have has revived fully and is alert again.
"The chimpanzee is in perfect health and there are no injuries to the animal," the authorities said.
The three injured persons were treated as out-patients at Fever Hospital at Nallakunta. (INN)